250F isn't much when M1 oils are rated up to 500F.
Mobil 1 10w-30 has a flash point of 450°F. See any issues with your statement?
Originally Posted By: motor_oil_madman
Yeah the oil can handle the heat, but I'd like a little more film between moving parts at 250.
Notice every post of yours in this thread includes "I think", or "I like". What's absent is any data whatsoever that would support your desire to deviate from the OEM viscosity recommendations; what's great about tribology is you don't need to go on feelings, analogies, or beliefs. [/quote
This thread is about 30 wt oils in OPE, and will 30 WT hold up in OPE. My many years of experience has been, yes the 30 wt I used has worked great in all my OPE. So why would I waste money on tribolory?