Join Date: Jan 2007
Location: Oceanside, NY
Car: 2005 OBW 2.5L, 1989 Subaru Justy, RIP Blu
Feedback Score: 0 reviews
It's a 40.00 part that can extend the life of a 2500.00 transmission.
Transmission fluid should be no more then 100 degrees hotter then ambiant. ABove that the tranny is overheating, and the oil starts to break down. Also spot trany temps can reach 1200 degrees (for a split second) as clutches engage. Heat is produced by the front pump, and from other moving parts.
There is a factory cooler/warmer in the radiator. That is usually good enough for the average driver.
If you carry a full load, pull a trailer, climb mountains, or do a lot of stop and go driving, an external cooler doesnt hurt. With a trailer or a full load (done often) it is required.
A cooler is really simple to install. It should go in the fluid line that goes from the tranny to the radiator, NOT from the radiator to the tranny. I forget which line is which.
The reason is that the cooler in the raditor also helps heat the fluid in winter. If you put the cooler in after the raditaor, you will be expelling wanted warmth. If you put it before, it will expell heat, then the raditor will normalize the fluid temp.
When i put mine in, the hardest thing was pushing the plastic mounts through the radiator for the cooler. Youll have to remove the top bolts of the radiator (dont have to remove the rad) to get your hand in there. Thats if you choose that location.
i know somone is going to argue with me, but think about the logic first.