What's the normal operating transmission temperature? What is considered cold and hot?
awesome thanks good infoAnything over 200 deg F (93 deg C) is considered hot... If you can nail those ATF temps below 200 deg most of the time, then it is ideal. Over 220 deg F then it is hurting the life of the transmission.
Without a tranny cooler, my stock transmission would hover around 190 deg F sitting in traffic. The moment I play with the E-shift, keeping revs higher than usual and after a few pulls (I was still NA), temps would climb up to 205-210 deg F. I can conclude that the stock ATF cooler configuration is not adequate for any type of spirited driving at stock power levels.
With a B&M 13000 BTU cooler, my temps were constantly under 200 deg F no matter what the hell I do with a stock engine (except for intake, Supra exhaust, HKS DLI and E-manage ultimate... just no boost yet ).
All temps are recorded with synthetic ATF as well. I can't even imagine how much hotter the stock ATF fluids would do.
its not about performance. its more important than that.so a tranny cooler really does help performance wise? i mean i just have bolt ons i/h/e..