Newton06

This weekend at VIR I logged oil temps in my Z51 at 265 degrees, with 91 degree ambient temps. The motor has a Texas Speed stage III head & cam kit installed & a conservative tune.

Wondering if this is getting a bit too warm & I need to spring for the Z06 grill, secondary oil cooler, 600W fan & the Z06 NACA ducts...

X25

What year is it? My 2016 Z51 already came with the 600W fan.

I also got about 265s at the track, which I find very reasonable. I'd start worrying if I started hitting 290s.

robert miller

I don't think you will hurt the car at this temp as long as you don't keep it at that temp for a really long time frame. Robert

Newton06

Hi guys, it is a 2015.

I was pitted with a guy that had a 2014 with the Z06 grill & the secondary cooler & he said it lowered his oil temps by 25 - 35 degrees.

Gearhead Jim

On our C6, the oil overtemperature warning came at 302'f, with 5W-30.
I once got to 293' for maybe 10 minutes while having too much fun, the next oil analysis showed no deterioration in the oil (Mobil1 5W-30) and no unusual wear in the engine.

On our C7 LT1, the red marks on the oil temp gauge start at something over 300.

Based on that, I wouldn't worry about 265 but would try to avoid going higher, just to be kind to the engine.

Newton06

Thanks!

I may hold off then on the purchases, which is good since I was just laid off from Dell.

RFZ

just getting warmed up for track session

davepl

Normal on the track. I'd start paying attention at 280 and start worrying at 300. I know the oil's good to at least 320, but I bail by 300 myself.

Mad Dog 24

Surprised GM doesn't recommend 15\50 for the track for Z51 as they do for the Z's or do they? Agree with every one else here 265 is just fine. Many run constantly over 285. OP are you do a complete track prep as coolant temps are directly related to oil. 80\20 water \ coolant or as we use Royal purple Ice additive. Make sure there is not one piece of debris or leaves in the radiator area. A set of cat covers from DEI over the 1200 degree cats 3 inches from your stock oil\water cooler.

rrsperry

They do. You shouldn't be running 0-30 on the track.

Kracka

I've dropped 20+ degrees off my temps with a Z06 grille, Z06 fan, DEI cat shields, and a bottle of Redline WaterWetter.

I've also wrapped my radiator hoses and ceramic coated my exhaust manifolds; both those lowered underhood temps, but didn't really effect engine running temps (coolant and oil).

Gearhead Jim

I would be nice to keep the cat heat away from the oil/coolant system.
But I wonder what will do to the cats over time?

Kracka

The DEI cat shields have standoffs to allow an air gap and some breathability to prevent them from totally baking. With that said, if something were to happen I'd either let the emissions warranty coverage take care of it, or just buy some used stock take-offs which are easy enough to come by on here for cheap.

djnice

Last weekend with my GS I was getting to 280 on the mountain road and my brakes are wobbling now. The road is like a 1 hour road course.