Just curious what most people feel is a safe maximum engine oil temp. We usually see around 255 deg at it's hottest point. Personally I think it should be ok up to about 270 degrees but would definitely like some opinions. We're running a single PWR oil cooler with electric fan on a 408 SBF that's making around 550HP. Currently using Royal Purple synthetic oil but may switch to Red Line in the near future. The rep from Royal Purple was absolutely no help in suggesting a safe limit. He side stepped the quesiton in every way possible because he didn't have the answer. Most people I've talked to either don't monitor oil temp or don't know. What are most of you seeing in the desert in a race condition?