Recommendation For Transmission/Engine Oil Cooler on 1995 Ford Ranger V6 Towing 2750 lb Trailer  

Question:

Expert Reply:

An engine cooler and a transmission cooler are always good items to have on your vehicle when towing a trailer. Even though you mention the outside temperatures will be cold, the strain that towing a trailer will put on the engine and transmission of your vehicle will still increase the temperatures of the oil and fluid in your vehicle. The coolers will help keep those temperatures at their best operating levels for optimum life and performance of the engine and the transmission

I recommend the Derale Combination Transmission and Engine Oil Cooler # D15902 for your 1995 Ford Ranger, as opposed to the engine oil cooler # D15551 you referenced since that one is an engine oil cooler only.

This is a combination transmission and engine oil cooler that will keep both engine and transmission temperatures cool with just one system and can prolong the life of the transmission and engine on your truck. Be sure to find out if you have enough room in front of your air conditioner condenser or in front of your radiator.

It measures 17 inches wide x 12-1/2 inches tall x 3/4 inch deep. I have included links to our FAQ pages on Transmission Coolers and Engine Oil Coolers. I have included a picture of the product, providing you with a visual of how it needs to be installed.

You will also want to check your owners manual because it will help you determine when to use a transmission/engine oil cooler on your vehicle.

FOLLOW UP:

After some research, I discovered that the sandwich adapter on the Derale Combination Transmission/Engine Oil Cooler # D15902 has a bypass valve that kicks in at 180 degrees, allowing 90 percent of the engine oil to bypass the cooler and heating up faster.

For the transmission side, I recommend the Derale Fluid Control Thermostat Kit # D15719 which also has a bypass valve that allows 90 percent of the oil to bypass the cooler once the fluid temperature reaches 180 degrees.

expert reply by: Brandon M

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Chris S.

4/13/2013

In the follow up from Brandon M. on engine Trans Fluid cooler part D15902 he explained the sandwich adapter has a bypass valve at 180 degrees. Im just a little confused on how bypassing the cooler at 180 degrees would help it heat up faster. To me it would make sense that to only let 10 of fluid through the cooler while the motor is heating up and then once it gets to a set temperature the valve opens allowing 100 to flow through the cooler?Maybe just explain it to me I am very interested in getting this kit for my truck.Thanks, Chris

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Patrick B.

4/24/2013

I think it does exactly what you are asking about. Until engine oil hits 180 degrees, only 10 percent of the oil passes through the cooler. The other 90 percent hits the adapter and immediately returns to the oil pan without passing through the cooler. Once the oil reaches 180 degrees, the thermostat valve opens and all oil passes through the cooler. We will update the question to make it more clear.

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