How do transmissions stay cool?

How It Keeps Things Cool. A transmission cooler operates like a heat exchanger mounted adjacent to your car’s radiator. Hot transmission fluid flows through the unit and comes in contact with a series of fins or plates. The resulting heat dissipation cools the liquid as it cycles back into the transmission.

How does transmission get cooled?

In almost all vehicles with an automatic transmission there is a transmission cooler placed inside the radiator. Most standard transmissions do not make as much heat and therefore do not have a cooler. … This way the transmission is being cooled by two different coolers; one with antifreeze and on through air flow.

Are transmissions water cooled?

Water can come from the radiator or an external source. All transmissions have a cooling line that runs to the radiator. A separate fluid passage circulates the transmission fluid through a portion of the radiator to cool the fluid. … On other cars, rainwater leaks into the fluid, usually through the dipstick tube.

How does transmission fluid cool down?

Here’s how your transmission stays cool: Whenever your engine is running, the transmission fluid gets pumped into the transmission cooler, which lives inside your car’s radiator. As the transmission fluid passes through the radiator (inside those transmission cooler lines), it essentially gets bathed in coolant.

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Is a bigger transmission cooler better?

The larger the cooler, the better it will be at lowering fluid temperature. The plate and fin and the stacked plate coolers offer a larger surface area to cool transmission fluid faster and better, which is why they are so popular.

Do transmission coolers need a fan?

Mechanical fans are almost always better than electric fans in terms of CFM or cooling power if you will. In this case an external transmission cooler is what is needed. Whether it needs it’s own fan or not would require testing the temps of the fluid to find out.

How do you stop a transmission from overheating?

Consider a transmission cooler to help your car’s cooling system. Your car’s radiator does the job of cooling the transmission, so be sure to maintain it. You should check the coolant from time to time, and change it about every two years. If you tow or haul heavy loads, consider getting a transmission cooler.

Should transmission cooler be before or after radiator?

Should the cooler be installed before or after the radiator? Answer: We recommend installing the auxiliary cooler after the radiator to return the coolest fluid directly to the transmission.

What makes a transmission overheat?

Low fluid levels or old transmission fluid causes friction between the parts and causes overheating. Fluid problems are the most common reason for transmissions overheating.

What makes a transmission hot?

An overheating transmission usually means there is already some sort of internal damage or a transmission fluid issue, such as a leak, low fluid level or just old/dirty fluid running through the system. It can also happen with too much transmission fluid, which causes excess pressure within the transmission.

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What temp is too high for transmission?

Fluid Life Expectancy vs Temperature

The ideal operating temperature of transmission fluid is 175 degrees. Overheating occurs after the temperature surpasses 200 degrees, and the failure rate doubles for every additional 20 degree increase after that.

Are transmission coolers directional?

Can Transmission Fluid Flow Through Either Direction on a Transmission Cooler. Helpful Expert Reply: … The cooler can have fluid flow in either direction through it.

How do I keep my transmission cool while towing?

Adding a simple auxiliary cooler inline with the factory unit can nearly double the life of transmission fluid, keeping your gearbox happy and healthy for a long time. Also helpful are aftermarket aluminum pans. Their added fluid capacity and finned heat-sink design provide additional cooling as well.

How much does it cost to have a transmission cooler installed?

As a DIY project, you’ll pay between $30 and $60 for the oil cooler and spend 1 1/2 to 2 hours on installation. You can have a local transmission shop install a transmission oil cooler in your vehicle. Expect to pay between $150 and $250 for the job.