That's with slightly heavy driving.
Note: I've installed an aux cooler too. That just seems high to me. It's got a proper fluid level and I've checked the cooler lines for kinks. Opinions?
City driving, lightly aggressive takeoffs. 63-68 degrees f and I'm using Penzoil Mercon VWhat kind of driving are you doing? What's the ambient temp? What kind of trans fluid are you using?
I have always used this as a general guide, your doing good !
Since this is an interesting topic with good actual data from the OP:
As another data point on a different trans cooler set-up:
I have a 3.0L Vulcan with the AX4S trans...1993. I have a trans temp gauge installed in the trans oil line coming from my auxillary cooler and back into the transmission. I do not run the trans oil line through the radiator....so the radiator cooler is totally bypassed. My auxillary cooler is in front of my A/C condenser. The auxillary cooler is a plate design rated about 19,000 GVW.
After 20 minutes of in city driving at 50 degrees ambient I see around 130-150 degrees. The most I have seen is after 45 minutes of freeway driving and then with 10 minutes of city driving about 155-160 degrees.....thats with about 55 degrees ambient. Still waiting for warmer summer weather to see what temps I get. Fluid is Mercon V. Oil temp reaches about 100 after about 5 minutes of city driving.
My coolant line never even runs into the radiator.. It's just got the stock finned tube. From there I run it into the aux cooler.With my bypassed radiator cooler, the stock finned cooler + B&M70628, my trans never goes over 150 unless I'm racing or driving it reallllllllly hard.
Yes and No. Mostly no. It depends on the cooler and plumbing. I always recommend a good half inch ID so you don't have to worry about reduction in flow. And you always want smooth bends with the plumbing for the same reason.If your running a good stacked plate type aux cooler, you should bypass the radiator atf cooler, as running both can reduce the flow of atf. Also, most trans run cooler with full synthetic atf, such as Mobil1. The weak trans Ford used in these cars also shift better with full synthetic atf.