Noturgrandpas63

Hey guys! Quick question!

Today outside temp was 100 degrees even, in Colorado, we have some wildfires going on and its very hazy, bad air quality, everything. Went driving in manual mode for a while, stop and go traffic.

I noticed as I was pulling into the neighborhood my oil temp was like, 235°F?? Coolant still about 197°F.

Took it back out about 15-20 mins later and used manual and sport and oil ran about 226°F consistently. Coolant the same at 197°F.

Again I've never noticed it that hot before, also today is truly a very hot day, bad air quality, and didnt go over 45mph the whole deive. Mentioning that because ive been told these engines run cooler at higher speeds.

Thanks guys!
Matt

Noturgrandpas63

Nevermind, did some reading and some guys say they have seen upwards of 240°f in manual mode. One guy, im not kidding when I say this, says he saw his at 255°f on the track! Holy smokes!! Thanks for reading, im still interested in your responses if you'd like to share!

Matt

BLKROKT

Normal. (I’ve seen 286F briefly before upgrading my coolers)

Regardless of speed, in traffic when airflow is poor following cars, is when you’ll see unusual spikes like that.

Noturgrandpas63

Upgrading coolers... could you elaborate? Part number? Whats the install like? (If you did install)

BLKROKT

It’s too late for the 44O factory upgrade kit, which eliminated high oil temps and limp mode by upgrading all oil coolers to BS spec and was discontinued a couple of years ago. However this alternative may work for you. https://mbworld.org/forums/c63-amg-w...4o-option.html

Cwagon

I'm currently in the process of fitting up my bigger front mount oil cooler from SRG-C63.
Also plan to remove the side auxiliary oil cooler fan (like the 440 option) for the time being to see if it runs cooler.
The fan is only really of benefit in heavy traffic otherwise it stifles the air flow when moving at speed.

DRBC43AMG

I have also ordered the bigger oil cooler upgrade from SRG-C63 and should receive it in September

fflmlf

I would run 280+ degree oil temps in the Corvette all the time. Synthetic oil can handle it, just be sure to keep your oil change intervals reasonable.

DRBC43AMG

So why do they go into limp mode when the oil temp gets too high?

BLKROKT

They do go into limp mode generally over 270-275F oil temp. Sometimes it’s not sudden, but a more gradual cut of things like shifting. I’ve seen higher on track I assume due to a lag in reading when really hammering it.

And for the record, whether you’re using synthetic oil or not, anything over 280F should require an oil change as soon as possible. It’s no bueno.

skullbox15

In FL here it's usually around 100F. I regularly see 225-230 in manual mode. I think my record temp is 245. Around 240 seems to be when the fans kick on.