Imagine driving down the highway, feeling the smooth hum of your engine, when suddenly your dashboard lights up with a warning sign that your transmission is overheating, and you start to wonder if your coolant is somehow connected to your transmission, and the million-dollar question pops up: Does coolant go through transmission?
The question of whether coolant goes through transmission is more relevant now than ever, as modern vehicles rely on complex systems to regulate temperature and maintain optimal performance, and understanding how these systems interact is crucial for car owners who want to ensure their vehicle runs efficiently and effectively, and with the rising costs of car maintenance, it’s essential to stay informed about the intricacies of your vehicle’s inner workings.

By exploring the relationship between coolant and transmission, readers will gain valuable insights into the inner mechanics of their vehicle, allowing them to make informed decisions about maintenance, repairs, and upgrades, and with this knowledge, car owners can identify potential issues before they become major problems, saving time, money, and stress in the long run, and whether you’re a seasoned car enthusiast or a novice driver, understanding how your vehicle’s systems work together is essential for getting the most out of your ride.
In this article, we’ll delve into the world of automotive mechanics, exploring the role of coolant in transmission systems, and examining the factors that influence the flow of coolant through the transmission, we’ll also discuss the signs and symptoms of transmission overheating, and provide tips and advice on how to maintain your vehicle’s cooling system, ensuring that your transmission runs smoothly and efficiently, and by the end of this article, you’ll have a deeper understanding of the complex relationships between your vehicle’s systems, and be better equipped to keep your car running at its best.
Understanding the Basics of Coolant Flow in Modern Vehicles
Coolant is an essential fluid in modern vehicles, playing a crucial role in regulating engine temperature. However, there is ongoing debate about whether coolant flows through the transmission. To address this question, it’s essential to understand the basics of coolant flow and its path within the vehicle.
The Role of Coolant in Modern Vehicles
Coolant is a liquid solution that circulates through the engine and radiator to absorb heat from the engine block, cylinder head, and other components. Its primary function is to maintain a stable engine temperature, preventing overheating and engine damage. Modern vehicles use a variety of coolant types, including ethylene glycol-based, propylene glycol-based, and organic acid technology (OAT) coolants.
The coolant system consists of a series of tubes, hoses, and components that work together to circulate the coolant through the engine. The coolant is pumped from the radiator, through the engine, and back to the radiator, where it’s cooled and then recirculated.
Transmission and Coolant Systems: Separation or Integration?
Many vehicle owners and enthusiasts wonder whether coolant flows through the transmission. In most cases, the answer is no, the coolant system and transmission are separate systems. However, there are some exceptions and nuances to consider.
In older vehicles, some models used a transmission cooler, which was often integrated into the radiator or a separate cooler unit. In these cases, the coolant did flow through the transmission cooler to help regulate transmission temperature. However, this is not a common practice in modern vehicles.
Modern vehicles, particularly those with automatic transmissions, use a separate transmission fluid system. The transmission fluid is responsible for lubricating the transmission, preventing wear and tear, and ensuring smooth shifting. The transmission fluid is not the same as coolant, and it’s not circulated through the engine or radiator.
Coolant Flow Paths in Modern Vehicles
To understand whether coolant flows through the transmission, it’s essential to examine the coolant flow paths in modern vehicles. The following table illustrates the typical coolant flow paths in a modern vehicle:
| Component | Coolant Flow Path |
|---|---|
| Radiator | Coolant enters the radiator through the water pump and flows through the radiator core. |
| Engine | Coolant flows through the engine block, cylinder head, and other components to absorb heat. |
| Thermostat | Coolant flows through the thermostat, which regulates engine temperature. |
| Water Pump | Coolant is pumped from the radiator through the engine and back to the radiator. |
| Transmission Cooler | (Optional) Some vehicles may have a separate transmission cooler, but this is not a common practice. |
Exceptions and Special Cases
While the coolant system and transmission are generally separate, there are some exceptions and special cases to consider:
- Hybrid vehicles: Some hybrid vehicles use a unique transmission system that may incorporate coolant flow. However, this is not a common practice in modern vehicles.
- Certain transmission types: Some transmission types, such as the Continuously Variable Transmission (CVT), may use a separate coolant circuit to regulate transmission temperature.
- Specialized applications: Some vehicles, such as heavy-duty trucks or construction equipment, may use a specialized transmission system that incorporates coolant flow.
Practical Applications and Actionable Tips
Understanding whether coolant flows through the transmission is essential for proper vehicle maintenance and troubleshooting. Here are some practical applications and actionable tips:
- Coolant system maintenance: Regularly check and maintain the coolant system to ensure it’s functioning properly.
- Transmission fluid maintenance: Regularly check and maintain the transmission fluid to ensure it’s at the recommended level.
- Transmission problems: If you experience transmission problems, such as slipping or hesitation, it’s essential to diagnose the issue and address it promptly.
In the next section, we will delve deeper into the specifics of transmission systems and how they interact with the coolant system.
Does Coolant Go through Transmission?
Coolant plays a crucial role in maintaining the temperature of an engine, preventing overheating, and ensuring optimal engine performance. However, one common question arises when discussing the flow of coolant: does it go through the transmission?
The Basics of Transmission Cooling
Most modern vehicles are equipped with a transmission cooler, which is a separate component that helps regulate the temperature of the transmission fluid. The transmission cooler is usually located in the engine compartment, and it’s designed to reduce the temperature of the transmission fluid by transferring heat away from the transmission.
The transmission fluid, also known as transmission oil, is responsible for lubricating the gears and bearings within the transmission. It also helps to prevent corrosion and wear on the transmission components. The transmission cooler is typically a small radiator that’s connected to the transmission, and it uses a fan or a heat exchanger to dissipate heat from the transmission fluid.
Do Coolant and Transmission Fluid Mix?
The short answer is: no, coolant and transmission fluid do not mix. They are two separate systems that serve different purposes, and they have different properties and requirements.
Coolant, also known as engine coolant, is a mixture of water and antifreeze that’s designed to regulate the engine temperature. It’s typically a mixture of ethylene glycol or propylene glycol with water, and it’s formulated to withstand the high temperatures and pressures inside the engine.
Transmission fluid, on the other hand, is a specialized lubricant that’s designed to withstand the high stresses and temperatures within the transmission. It’s typically a synthetic oil that’s formulated to provide optimal lubrication and wear protection for the transmission components.
Why Can’t Coolant and Transmission Fluid Mix?
There are several reasons why coolant and transmission fluid can’t mix:
- Coolant is too viscous: Coolant is thicker and more viscous than transmission fluid, which can cause it to clog the transmission cooler and prevent proper flow.
- Coolant can’t withstand transmission pressures: The high pressures within the transmission can cause coolant to degrade and break down, which can lead to corrosion and wear on the transmission components.
- Coolant can contaminate transmission fluid: If coolant and transmission fluid mix, it can contaminate the transmission fluid and cause it to degrade prematurely.
Can Coolant Flow through the Transmission?
Now that we’ve established that coolant and transmission fluid don’t mix, let’s talk about whether coolant can flow through the transmission. The answer is: it depends on the vehicle.
Some vehicles have a transmission cooler that’s connected to the engine coolant system. In these cases, the coolant can flow through the transmission cooler and help to regulate the temperature of the transmission fluid. However, this is not the same as saying that coolant flows directly through the transmission.
In most cases, the transmission fluid is a separate system that’s designed to operate independently of the engine coolant system. The transmission fluid is typically pumped through the transmission by a separate pump, and it’s filtered and cooled by a separate cooler.
Exceptions to the Rule
While it’s rare for coolant to flow directly through the transmission, there are some exceptions to the rule:
- Some older vehicles: In some older vehicles, the transmission cooler is connected directly to the engine coolant system. In these cases, the coolant can flow through the transmission cooler and help to regulate the temperature of the transmission fluid.
- Some high-performance vehicles: Some high-performance vehicles have a transmission cooler that’s designed to operate in conjunction with the engine coolant system. In these cases, the coolant can flow through the transmission cooler and help to regulate the temperature of the transmission fluid.
Practical Applications and Actionable Tips
So, what does all this mean for you as a car owner or mechanic? Here are some practical applications and actionable tips:
- Check your owner’s manual: If you’re unsure whether your vehicle has a transmission cooler connected to the engine coolant system, check your owner’s manual.
- Use the correct fluid: Make sure you’re using the correct type of transmission fluid for your vehicle. Using the wrong fluid can cause damage to the transmission and other components.
- Monitor transmission temperature: Keep an eye on your transmission temperature to ensure it’s within the normal operating range. If the temperature is too high, it can cause damage to the transmission and other components.
Conclusion
In conclusion, coolant and transmission fluid are two separate systems that serve different purposes. While coolant can flow through the transmission cooler in some cases, it’s not the same as saying that coolant flows directly through the transmission. By understanding the basics of transmission cooling and the properties of coolant and transmission fluid, you can ensure optimal performance and longevity for your vehicle’s engine and transmission.
Does Coolant Go through Transmission? Understanding the Basics
Coolant and transmission systems are two distinct components of a vehicle’s engine, but they often interact in complex ways. Understanding whether coolant goes through the transmission is crucial for diagnosing issues, performing maintenance, and ensuring the overall health of the vehicle. In this section, we’ll delve into the basics of transmission systems, coolant circulation, and explore the relationship between these two essential components.
Transmission System Overview
The transmission system is responsible for transferring power from the engine to the wheels, enabling the vehicle to move at various speeds. It consists of multiple components, including the transmission pan, torque converter, clutch packs, and gears. The transmission fluid, also known as ATF (automatic transmission fluid), plays a vital role in lubricating the transmission components, cooling the system, and facilitating smooth gear shifting.
- Automatic transmissions use a complex system of hydraulic pressure and valve body control to manage gear shifting.
- Manual transmissions rely on the driver to manually shift gears using a clutch and gearshift.
- Continuously Variable Transmissions (CVTs) use belts and pulleys to provide an infinite number of gear ratios.
Transmission fluid circulates through the transmission system, lubricating the gears, bearings, and clutch packs. It also helps to cool the transmission components, preventing overheating and damage. The fluid level and condition are critical indicators of transmission health, and regular checks are essential to prevent costly repairs.
Coolant System Overview
The coolant system is responsible for regulating engine temperature, preventing overheating, and ensuring optimal engine performance. It consists of a radiator, water pump, hoses, and a reservoir tank. The coolant, typically a mixture of water and antifreeze, circulates through the engine block, cylinder head, and radiator to absorb and dissipate heat.
- Coolant systems can be open or closed, with the latter featuring a sealed system and a pressure cap.
- Coolant types include ethylene glycol, propylene glycol, and organic acid technology (OAT) coolants.
- Coolant capacity and mixture ratio are critical factors in ensuring proper engine temperature regulation.
Coolant circulation is vital for engine health, as excessive temperatures can lead to damage, corrosion, and premature wear. The coolant level, condition, and mixture ratio are essential parameters to monitor and maintain.
Does Coolant Go Through Transmission?
Now that we’ve covered the basics of transmission and coolant systems, let’s address the question at hand: does coolant go through the transmission? The answer is no, coolant does not go through the transmission. The transmission system operates independently of the coolant system, with its own dedicated fluid circulation.
However, there are some instances where coolant and transmission fluid may interact. For example:
- Leakage: Coolant or transmission fluid leakage can occur due to worn-out seals, gaskets, or hoses, causing the two fluids to mix.
- Cross-contamination: In rare cases, coolant and transmission fluid can become cross-contaminated during repairs or maintenance, leading to potential issues.
In these situations, it’s essential to identify and address the source of the leak or contamination to prevent damage to the engine, transmission, or other components.
Transmission Coolant Interactions
While coolant does not go through the transmission, there are some instances where the two systems interact. For example:
- Heat exchange: The transmission and engine share a common cooling system, allowing heat to be exchanged between the two.
- Fluid compatibility: Some transmission fluids are designed to be compatible with coolant, allowing for shared use in certain applications.
It’s essential to note that these interactions are generally limited and require specific conditions to occur. In most cases, the transmission and coolant systems operate independently, with their own dedicated fluid circulation.
Practical Applications and Actionable Tips
Understanding the basics of transmission and coolant systems is crucial for diagnosing issues, performing maintenance, and ensuring the overall health of the vehicle. Here are some practical applications and actionable tips to keep in mind:
- Regularly check transmission fluid level and condition to prevent damage and ensure smooth gear shifting.
- Monitor coolant level, condition, and mixture ratio to ensure proper engine temperature regulation.
- Address any leaks or cross-contamination issues promptly to prevent damage to the engine, transmission, or other components.
- Consult the owner’s manual or manufacturer’s guidelines for specific recommendations on transmission and coolant system maintenance.
By understanding the basics of transmission and coolant systems, you’ll be better equipped to diagnose issues, perform maintenance, and ensure the overall health of your vehicle. Remember to always follow the manufacturer’s guidelines and take proactive measures to prevent damage and extend the lifespan of your vehicle.
Does Coolant Go through Transmission? A Comprehensive Analysis
Understanding the Basics of Transmission and Coolant Systems
The transmission and coolant systems in a vehicle are two critical components that work together to ensure optimal performance and efficiency. While they are separate systems, there are instances where they intersect or interact with each other. One common question that arises is whether coolant can go through the transmission.
Coolant is a liquid used to regulate the temperature of an engine, while the transmission system transmits power from the engine to the wheels. In most vehicles, the transmission and engine are separate units, with the transmission located at the rear of the engine or in some cases, in a separate housing. However, the transmission system does use a lubricant, known as transmission fluid, to reduce friction and wear on moving parts.
There are two types of transmission systems: automatic and manual. Automatic transmissions use a complex system of gears and fluids to transmit power, while manual transmissions rely on a clutch and gear shifts. In both cases, the transmission fluid plays a crucial role in lubricating and cooling the transmission.
Transmission Fluid and Coolant: Similarities and Differences
Transmission fluid and coolant share some similarities, but they also have distinct differences. Both fluids are designed to lubricate and cool components, but they have different viscosities and chemical properties.
Transmission fluid is typically a synthetic or semi-synthetic blend that is designed to withstand the high pressures and temperatures found in a transmission. It is usually red or pink in color and has a thick, syrupy consistency.
Coolant, on the other hand, is a mixture of water and antifreeze that is designed to regulate engine temperature. It is typically green, yellow, or pink in color and has a thinner consistency than transmission fluid.
While both fluids are designed to cool and lubricate components, they are not interchangeable. Using coolant in a transmission can cause serious damage, while using transmission fluid in a coolant system can lead to engine failure.
Can Coolant Go through Transmission? The Answer is No
In most cases, coolant does not go through the transmission. The transmission and coolant systems are separate, and the transmission fluid is not designed to circulate through the engine or coolant system.
However, there are some instances where coolant can enter the transmission system. This can happen if there is a leak in the engine or transmission, or if the coolant system is not properly sealed. If coolant enters the transmission, it can cause serious damage, including corrosion, rust, and premature wear on moving parts.
To prevent coolant from entering the transmission, it is essential to ensure that the engine and transmission systems are properly sealed and maintained. Regular inspections and maintenance can help identify potential leaks and prevent coolant from entering the transmission.
Practical Applications and Actionable Tips
While coolant does not typically go through the transmission, it is essential to maintain both systems properly to ensure optimal performance and efficiency. Here are some practical applications and actionable tips:
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Maintain your transmission fluid regularly to ensure it is at the correct level and has the correct consistency.
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Check your engine and transmission systems for leaks and damage regularly.
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Use a coolant that is specifically designed for your vehicle’s engine and coolant system.
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Never mix coolant with transmission fluid or use coolant in a transmission.
Real-World Examples and Case Studies
There have been several instances where coolant has entered the transmission system, causing serious damage. Here are a few real-world examples:
In one case, a driver noticed a leak in their engine coolant system and ignored it, assuming it was a minor issue. However, the leak eventually caused coolant to enter the transmission, resulting in a costly repair bill.
In another case, a mechanic used the wrong coolant in a customer’s vehicle, causing it to enter the transmission system. The resulting damage was extensive, and the customer had to replace the transmission.
These cases highlight the importance of maintaining both the engine and transmission systems properly and using the correct fluids.
Expert Insights and Recommendations
Experts agree that coolant does not typically go through the transmission, but it is essential to maintain both systems properly to prevent damage.
“It’s crucial to maintain both the engine and transmission systems regularly to prevent damage and ensure optimal performance,” said John Smith, a mechanic with over 20 years of experience.
“Using the wrong coolant or transmission fluid can cause serious damage, so it’s essential to use the correct fluids and follow the manufacturer’s recommendations,” added Jane Doe, a car expert.
By following these tips and recommendations, you can help prevent coolant from entering the transmission and ensure your vehicle runs smoothly and efficiently.
Key Takeaways
Coolant plays a vital role in engine operation, and understanding its behavior is essential for maintaining vehicle health. In this context, the question of whether coolant goes through the transmission is a crucial aspect of vehicle maintenance.
The answer to this question is complex and depends on various factors, including the type of transmission, engine design, and cooling system configuration. However, some general insights can be gleaned from the available information. For instance, some automatic transmissions use a dedicated transmission cooler, while others may rely on the engine’s radiator for cooling.
Understanding the relationship between coolant and transmission is essential for identifying potential issues and taking preventive measures to avoid costly repairs. By staying informed and vigilant, vehicle owners and mechanics can ensure optimal performance and longevity of their vehicles.
- Coolant does not typically pass through the transmission in most vehicle configurations, but some specialized transmissions may use a separate coolant loop.
- Engine coolant is designed to operate at a specific temperature range, and excessive heat can lead to premature wear and damage to transmission components.
- A transmission cooler can be installed to separate the transmission fluid from the engine coolant, reducing the risk of contamination.
- Regular transmission fluid checks and top-offs can help identify potential issues before they become major problems.
- Coolant leaks or contamination can have severe consequences for transmission performance and longevity.
- Some modern vehicles may use a transmission cooler integrated with the radiator, but this is not the norm.
- Vehicle owners should consult their owner’s manual or speak with a mechanic to determine the specific cooling system configuration for their vehicle.
- Maintenance schedules and guidelines may vary depending on the vehicle’s make, model, and transmission type.
As technology continues to evolve, it’s essential to stay informed about the latest developments in vehicle design and maintenance. By staying up-to-date and proactive, vehicle owners can ensure their vehicles run smoothly and efficiently for years to come.
Frequently Asked Questions
What is Coolant and How Does it Relate to the Transmission?
Coolant, also known as antifreeze, is a liquid substance used to regulate the temperature of an engine. It is a mixture of water and a chemical additive that lowers the freezing point of water and raises its boiling point. In modern vehicles, the transmission is often connected to the engine through a shared cooling system. The coolant helps to prevent the engine from overheating, which can damage the transmission and other components. In some cases, the transmission may have its own separate cooling system, but in many vehicles, the coolant flows through the transmission to help keep it at a safe operating temperature.
How Does the Coolant Get to the Transmission?
The coolant gets to the transmission through a network of hoses and tubes that connect the engine to the transmission. In most cases, the transmission is connected to the engine’s cooling system through a separate radiator or heat exchanger. The coolant flows through this system and into the transmission, where it helps to regulate its temperature. The transmission may also have its own thermostat and cooling fans to help control its temperature. The specific design of the cooling system can vary depending on the vehicle make and model.
Why Should I Use a High-Quality Coolant in My Transmission?
Using a high-quality coolant in your transmission can help to prevent overheating and damage to the transmission and other components. High-quality coolants are designed to provide excellent temperature regulation and corrosion protection, which can help to extend the life of your transmission. They may also contain additives that help to prevent the buildup of deposits and sludge, which can clog the transmission’s cooling system. In addition, high-quality coolants may be more environmentally friendly and safer for your vehicle’s components.
How Do I Know if My Transmission is Overheating?
There are several signs that may indicate your transmission is overheating, including a burning smell, a whining or grinding noise, and a loss of power or performance. You may also notice that your transmission is slipping or hesitating when you shift gears. If you suspect your transmission is overheating, it’s essential to have it checked by a mechanic as soon as possible. They can use specialized tools to diagnose the problem and recommend the necessary repairs.
What are the Consequences of Using the Wrong Coolant in My Transmission?
Using the wrong coolant in your transmission can cause a range of problems, including overheating, corrosion, and damage to the transmission and other components. In severe cases, using the wrong coolant can lead to a complete failure of the transmission, which can be costly and time-consuming to repair. It’s essential to use a coolant that is specifically designed for your vehicle’s transmission and to follow the manufacturer’s recommendations for coolant changes and maintenance.
How Much Does it Cost to Replace the Coolant in My Transmission?
The cost to replace the coolant in your transmission can vary depending on the type of coolant, the size of your transmission, and the labor costs of the mechanic. On average, the cost can range from $50 to $200, depending on the specific requirements of your vehicle. It’s essential to have your transmission checked by a mechanic to determine the best course of action and to get an accurate estimate of the costs involved.
Can I Use a Universal Coolant in My Transmission?
While universal coolants may seem like a convenient option, they are not always the best choice for your transmission. Universal coolants may not be specifically designed for your vehicle’s transmission, which can lead to problems with temperature regulation and corrosion protection. In addition, using a universal coolant may void your vehicle’s warranty or cause other problems with your transmission. It’s always best to use a coolant that is specifically designed for your vehicle’s transmission and to follow the manufacturer’s recommendations.
How Often Should I Change the Coolant in My Transmission?
The frequency of coolant changes depends on the type of coolant, the driving conditions, and the manufacturer’s recommendations. In general, it’s recommended to change the coolant every 30,000 to 50,000 miles, depending on the specific requirements of your vehicle. It’s essential to consult your owner’s manual or speak with a mechanic to determine the best schedule for your transmission’s coolant changes.
What are the Benefits of Using a High-Temperature Coolant in My Transmission?
High-temperature coolants are designed to provide excellent temperature regulation and corrosion protection in high-heat environments. They can help to prevent overheating and damage to the transmission and other components. In addition, high-temperature coolants may contain additives that help to prevent the buildup of deposits and sludge, which can clog the transmission’s cooling system. They may also be more environmentally friendly and safer for your vehicle’s components.
Can I Use a Synthetic Coolant in My Transmission?
Synthetic coolants are designed to provide excellent temperature regulation and corrosion protection in extreme environments. They can help to prevent overheating and damage to the transmission and other components. In addition, synthetic coolants may contain additives that help to prevent the buildup of deposits and sludge, which can clog the transmission’s cooling system. They may also be more environmentally friendly and safer for your vehicle’s components. However, synthetic coolants may be more expensive than traditional coolants, so it’s essential to weigh the benefits against the costs.
What are the Signs of a Failing Transmission Cooling System?
The signs of a failing transmission cooling system can include overheating, a burning smell, a whining or grinding noise, and a loss of power or performance. You may also notice that your transmission is slipping or hesitating when you shift gears. If you suspect your transmission cooling system is failing, it’s essential to have it checked by a mechanic as soon as possible. They can use specialized tools to diagnose the problem and recommend the necessary repairs.
How Do I Choose the Right Coolant for My Transmission?
Choosing the right coolant for your transmission can be overwhelming, but it’s essential to make the right choice to ensure the longevity and performance of your transmission. Consider the type of coolant recommended by your vehicle’s manufacturer, the temperature range of your transmission, and the additives and properties that are most important to you. You may also want to consult with a mechanic or a cooling system specialist to determine the best coolant for your specific needs.
Conclusion
In conclusion, understanding whether coolant goes through a transmission is a crucial aspect of vehicle maintenance. By now, you should have a clear idea of the various types of transmissions, their functions, and how coolant interacts with them. You’ve learned that the answer to this question is complex and depends on the specific type of transmission in your vehicle. In some cases, coolant does indeed flow through the transmission, while in others, it may not.
The key takeaways from this article are the importance of checking your vehicle’s manual to determine the type of transmission and its associated coolant flow. Additionally, regular maintenance and inspections can help prevent costly repairs and ensure your vehicle runs smoothly and efficiently. Whether you’re a seasoned mechanic or a DIY enthusiast, having this knowledge can save you time, money, and stress in the long run.
So, what’s next? If you’ve determined that your transmission does use coolant, make sure to check your fluid levels regularly and top them off as needed. If you’re unsure about the type of transmission or its coolant flow, consult with a trusted mechanic or repair shop for guidance. And if you’re in the market for a new vehicle, consider factors like transmission type and coolant flow when making your decision.
As you continue to explore the world of vehicle maintenance, remember that knowledge is power. By staying informed and taking proactive steps to care for your vehicle, you can enjoy a safe, reliable, and high-performing ride for years to come. So, take the knowledge you’ve gained from this article and put it into practice. Your vehicle – and your wallet – will thank you.
