[Dardecor]

Originally Posted by TransamGTA350

I know this was asked of mikedahammer, but I will also respond with some insight of my own experience.

As for 100 degree track days, the car will be fine. I've had no overheating, engine/trans temp fine, no brake fade/boiling under those conditions, pushing hard for 20 minutes straight. It's you that will have a harder time. Drink lots and lots of fluids (I like to alternate water and gatorade), wear breathable clothing. What I will normally do on those hot days is get to grid a little early and sit there with the windows up and the A/C on as cold as it goes and pre-cool myself before the session. When they send you out, shut the A/C off and drop the windows. When you're on your cooldown lap, turn the A/C back on and once you enter the paddock, put your windows back up and cool down as you make your way back to your paddock spot. If the track has a an air conditioned classroom where you can escape to between sessions, that also helps.

My car has about 20 track days and probably 10 autocrosses on it and not a single issue. It's been dead reliable. I use Mobil 1 Supercar 10W40 oil and the stock AC Delco trans and rear diff fluids, Castrol SRF brake fluid. Coolant is factory fill, never touched. Change engine oil/filter after 7-8 track hours and trans/diff fluid after 15 track hours.

Late response but I appreciate the insight. I will start switching to 15w50 for track days as well. I may also look into that GMS hood bracket to extract more heat as well