Trans temp?????
 

I have a PSD, just put my gauges in, My trans temp is around 165 at normal cruising, 75mph. Is this normal, what should I expect?

Sounds normal to me.

Very normal numbers......definitely in the safe range. What size tires are you running? Bigger ones tend to work the tranny a bit harder, and raise the temps a lil

Yup, its normal. As your power is increased, w/ Dp Tunes or any other chip/programmer, your temps will go up also.

Rule of thumb for tranny temps. 60 - 100 degrees over ambient temps.

Before I installed the Tru-cool cooler, I was 170 at 70 mph empty. I installed the cooler and I was never above 155 pulling my 32' TT at 65-70 mph. Flat land of course. :)

you should ussually see tranny temps about 70 degrees above outside ar temps, with the truck unloaded & not towing. Towing is a different story.......

Around town driving the temps can show a bit higher since the TC is unlocked under 35 mph and generates alot of heat.

Your numbers are the same as mine and from what everybody is saying, were cool,lol.

You COULD really benefit from a larger cooler, though. With my 6.0 cooler in 80-90* heat i run about 30-40* cooler. Every 10* cooler the transmission average's temperature is, theres a certain amount of miles its expected to last longer.

Good point Kris.

Normally cruising 75mph for me my temps are 125*. I get to 165* sitting in stop and go traffic unloaded, lol. Not too shabby, running 37's also.

That is low john, what gauges are you using?

Autometer Sport Comp2.

Tire size
 

I am running 265/75/16 BFG's All Terrains. I did not have any gauges untill the same day I put the DP Tuner on so I had no referance as to what was normal temps on my truck.

Thanks everyone for the response to my questions.