Trans temperature gauge
OK, heres the deal...I installed an Autometer tranny temp gauge in my truck this morning...4L60 trans....Its about 35-40 degrees around here, winters coming...Went into town to run a few errands. Temp...
Forum Discussion
CKNSLS wrote:DougE wrote:
If you search some you will find most sources state that the design operating temperature of automatic transmissions is 175*. You will also find that most life vs. temperature charts for auto transmissions do not go below 175*. This is the reason behind installing an auxiliary cooler prior to the radiator cooler. This allows cool trans fluid to be warmed up to the correct temp as the outlet of the engine radiator is ~175*.
Yea, there is a trans temperarture chart floating around the internet that's been wrong for ten years. There is no "normal" as long as it stays within the temoerature range where the fluid is designed to work. See my post above.
x2
Those charts can be extremely misleading, as they're based off of obsolete trans fluid technology. Much wiser in 2013 to go by either a) the truck manufacturer or b) the maker of the fluid itself.
Would take some getting used to, but I'm thinking a modern trans with today's synthetic fluid could run 240-250F for hours on end with no consequences.
