245 degree transmission oil on long steep grades

[NevadaGeo]

Originally Posted by TRfour

GM recommends that the maximum transmission-fluid temperature (measured in the sump) for short durations shall be no greater than 285 degrees F. At 300 degrees F, research shows, metal parts inside the transmission begin to warp and distort, seals begin to melt, and fluid life is extremely short because of heavy oxidation.

Those are asphalt paving temperatures by the way. Not so good for transmission fluid or parts.

[ROBERT CROSS]

Originally Posted by barts

I fitted a B&M 70274 SuperCooler to our F250 - big difference in oil temps. I can recommend this unit, along w/ an Autometer full-sweep gage to keep track of the temp.

- Bart

Very good unit..nice for us gyz up North too.... It won't "overcool" during the Winter month's. A feature not to be overlooked. T fluid must warm quickly.

Bob