Transmission Cooler Recommendations for a 2011 Toyota Corolla

Expert Reply:

Both the Derale Series 9000 Plate-Fin Transmission Cooler Kit, # D13611 and the Derale Series 8000 Plate-Fin Transmission Cooler Kit , # D13501, would be a great choice for your 2011 Toyota Corolla.

The general rule is that transmission fluid cannot be cooled too much, so using the largest cooler that will fit is a good idea, especially if towing. The only reason not to add the largest cooler possible, would be if you live in very cold climates where temperatures are below 0 degrees often or for long periods. If you have a transmission cooler installed, warming the engine for a few minutes would be warranted. Most people warm the engine in these conditions any way so it is not a factor.

You are correct that if either of the Transmission Line Compression Fitting Kits, # D13031 or # D13032, will work with the lines on your Corolla and that they would provide a better connection for safety. Careful inspection and measuring of the steel or aluminum lines on your vehicle is required to determine if these fittings will work.

Transmission fluid does not run at unusually high pressures so normally slipping the hose over the flared end of your original transmission line is more than sufficient. I would not recommend cutting the line and installing the hose without some flare at the ends of the transmission line. We have a video that shows how our installer cut and flared the line on a Dodge Caravan, check out the 4 minute 20 second mark in the video linked here. A flaring tool, available at most automotive parts stores, is the best way to flare a steel or aluminum line without damage. The flare will allow the hose clamp to tighten around the line and keep the hose from sliding off the end of the line.

expert reply by: Bob G