Where in the world is your transmission cooler?? I have a temp gauge on mine, while driving normal (i.e. not towing) it runs only 30-35 degrees above ambient. So on summer Dallas days, at 105, the temp gauge while driving reads in the 140 range, and only in stop-n-go traffic does it climb into the upper 100's. Towing is a bit different. When pulling my heavy trailer, the gauge reads 50-60 degrees above ambient (driving) and sometimes gets into the low 200's in traffic. Only when backing up where there is low air flow and poor oil circulation does it get in the 220+ range.
So in my mind, with a properly installed oil cooler, it should never get into the 200 range when driving, and only into the 200's in extraordinary situation (go slow off road, towing, heavy traffic....maybe). Even offroad (Gilmer Texas), I do not recall the gauge getting up to 200 in 4lo climbing some of the go slow hills.
And my oil cooler is AFTER the in-radiator pre-heater/cooler too. Some people bypass that one, but any heat you can dump before final cooling seems to me to be a good thing.
2007 Rubicon, Graystone, Auto, Dual, Power, Tow,GENTEX autodim mirror,COOL TECH antenna mount&exhaust,CIBIE,HELLA TPMS,AEM CAI, Fuel Door, Grab Handles,Tuffy,Thule,Olympic,HESCO Supercharger, HID, RR XHD FB w/stinger,DRAKE hoodlatch with locks
1972 C104 Commando - Bone stock
Last edited by jocrazy0; 08-18-2011 at 05:33 PM.