Oil Temperatures ?

IDZRVIT

300F. Read the test requirements for new SM/SN API certified oils. Why do you think the Z engineers decided on the limp mode temp of ~280F and not 260, 240, 264, 228, etc? The 260F temp limit is passe and old oil technology. Newer materials technology can withstand higher temps for modern cars thus the requirement for SM/SN oils.

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ChrisSlicks

This is correct. Stage one limp mode isn't until 280F, stage two limp mode is 300F but probably pretty difficult to reach when already restricted.

Synthetic oils can handle the high temperatures much better, but even they suffer some break down if above 260F for an extended period. It is a good idea to shorten your oil change interval if your engine spends time at high temperatures frequently.

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Jordo!

On a related note, to the best of my knowledge, pushing the car hard before temps approach 170-180* isn't a great idea (but if more recent data says otherwise, please correct me).

A tuner friend has told me that the ECU will pull a bit of timing as the oil temps climb over 200*F.

OP, unless you are routinely seeing temps over 240* F in normal driving, I wouldn't even worry about it.

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