Originally Posted by BobsWK2
MY 2014 Summit V8 trans temp reads higher than the 2012 Overland V8. I read somewhere that Chrysler designed it so the 8 speed is more efficient with the hotter trans temp. I just think the 8 speed operates at higher temps than the previous 5/6 speed trans.
ZF, a german manufacturer makes the 8 speeds, not Chrysler...although these days everything seems to be owned by FIAT... But you are right, the 8 speeds on the '14 run hotter. Mine ran 199 exactly when completely warmed up without skid plates. It ran at 205 with the skids--I thought that was odd, but I suppose logical as the transfer case and tranny heat is reflected back by the heavy steel plates.
I heard somewhere that 1hr or more at 250+ is bad...but then again I also heard, "don't worry about it, I'm on birth control once..."