CarlJ

I have a 22 GT4 with PDK. I recently picked it up about 2 months ago with about 2400 miles on it and I’ve done 2 track weekends. Loving the car, but coming from a 991.1 that I tracked, my oil temps seem to be really high. Yes, I run in PDK sport mode with the additional cooling. It keeps the temps down on the street, but it’s not helping on the track. Water temp is good, 220-225f.

last weekend was about 75-80f. Oil temp ran about 280f and PDK temp got up to about 260f.

this weekend it’s 100f this weekend… 🥵
my oil temps are seeing 285f and PDK 270f.

this seems really high to me, but I’ve noticed these 4.0 cars run quite a bit hotter on the street too. Not unusual to see 235-250 on the street in “normal” mode.

anyone else experiencing this or do I potentially have issues with my oil/water heat exchanger? Water temps seem normal. 220f at the track.

348SStb

I am also interested in this question.

I have had two 718 GTS 4.0 litre cars and I've noticed street oil temperatures above 230 degrees which seems high. I think an engine oil temperature of 285 degrees seems high. I know that on my former 2019 Mercedes-AMG S65 (V-12 car), when I was pressing the car real hard in the CA desert in a hot summer month, when I hit 270 on the engine oil temperature display, the display became red which meant I should cool it down.

Is there no such red display when the temperature is at 285F?

ExMB

All of these high temps are by design for emission reasons.

348SStb

Fine but when is the engine oil temperature too hot? There has to be an upper threshold.

Higgs Boson

oil temps in the low 300s are pretty common with a lot of cars. use the right oil for the track and change it after your track day.

CarlJ

I think “red line” for oil temp is 300f. It never gets there. It goes to 285 and seems to stay there infinitely. Problem is, PDK lags behind a few laps. When it get to 270-280, shifting and transmission behavior goes out the window…

not what I expect out of a GT car meant for the track, especially when my GTS 4.0 friends are coming in at like 240-250 max.

No way I should be experiencing 40-50f temps over the lower equipped GTS cars.

incursion

I think you're fine since I ran my car all summer last year on the track during Austin's hottest summer on record (10 days in a row of 105+ degrees). However, I did have to replace a rear axle, which is a known issue with heat.

GrantG

delete

apw

My gts4.0 has gotten up to the 270's at road atlanta in august last year. Was at barber a few weeks ago when it was in the 90's and didn't see anything above 260. I do change my shift behavior if i see it spiking up - run in 4th for longer than is probably optimal and change the shift point to 3rd to give the car a little more cooldown time.

slilley

CGTS 4.0 owner here. When I'm at the track, I have the right gauge cluster set to only show me the tire pressures, or the engine temp screen. I cycle through both screens during an on-track session with the thumb wheel. Most of the time I leave it on the temperature screen, because I assume the car will warn me if I start losing tire pressure from a puncture.

When on-track, I try to keep my oil temp below 250. When I see that the oil temp has crept up to 260 or 265, I start upshifting 500 to 1,000 rpms sooner - so I spend a lot less time with the car in the 6,500 to 7,800 range. Pretty quickly, the oil temps will drop. I think the highest I've ever seen was 280.

Sure, my lap times will increase slightly, but a good driver in my car would crush my best lap times even if they keep the car below 5K rpms. I'm slow, but I'm still having fun and learning! Unlike the Miata that I tracked for 10 years, my limits are far lower than the car's limits.

apw

Might be careful on that part if you're airing out tires - The TPMS warning is constantly on. I get occasional reminders of how low it thinks the tires are each session i just don't know if it would catch a rapid decrease and re-yell at you in a timely manner.

sf_c63

I just had my 4th track day yesterday in 90deg weather and didn’t see oil temp go above 260. I have a manual.

With my 997 it was unusual to see it go above 260 but if it did I would do cooldown laps. Usually occurred in 95+ heat which to be honest isn’t often in CA.

Drivingoncords

I have a pdk GT4. Highest oil temp I've seen is 270 when driving in high 80s weather. I've done plenty of hour long session with over 6k track miles total. No issues so this engine's pretty solid. I do notice higher oil burn when its hot outside so keep an eye on that.

lovetoturn

Just a POI and I know its not fair, but at full tilt in 80-90 degree weather the 4RS oil only hits about 230. The difference between a motorsports motor and a street motor. If you track your GT4, I would make sure you change the oil no less than every 6 track days. If you drive more on the street too, then maybe every 4 track days. That 0-40 oil looses viscosity quickly at nearly 300 degrees. That is why I used M1 5-50 race oil in my previous Cayman S and GT4 for years. Never an issue with it either.

incursion

Wow I'm going way longer between oil changes but plan to have mine analyzed soon.