PWM cooling fan(s) control using ECM

[4wheels]

As Dave pointed out, 280 degrees F is perfectly fine for good synthetic oil. You should be able to run over 300 with good oil (not saying you want it that hot but that it isn't that uncommon). High temperatures will cause some break-down of the oil and additive package so you should change the oil more frequently when it gets that hot. That shouldn't be an issue as I would assume most heavily tracked cars change the oil after each event weekend (and take an oil sample from time to time and send it to Blackstone or some other oil analysis company).

Originally Posted by parsonsj

I'm always battling heat in my '07 Z06 (E38), especially when I run at Sebring. Oil temps often go north of 280*. I'm assuming that my fans aren't running above 35 mph. True? Can that be changed with HPTuners? I gotta admit I've never looked at that...