Quote:
Originally Posted by cl4Rk
My Toyota Factory Service Manual (year 2000) shows the normal operating temperature ranges as:
- 158-176 F for ATF
- 176-203 F for Coolant
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Huh, my UG recently reported 249(!) degrees trans temp on a loooong, slow desert dirt climb and the A/T Oil Temp light didn't even come on (it works at start-up). My trans temp is all over the place and often runs hotter with OD on than off. I can be cruising on the freeway at 70 at approx 2K engine RPM , turn OD off and drop the tranny temp 10 degrees while running at 3k engine RPM (not saying they are related - just saying). My Trans oil is still red, smells good, and is smooth to the touch. I will be doing the filter and a fluid drain/replace soon anyway.
