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Old 03-09-2019, 09:04 PM   #20 (permalink)
SouthArk370Z
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Something in the engine will warp/melt/break before a good synthetic oil will quit lubricating. Syn oils are supposed to be able to handle 300F. The ECM nannies will kick in long before you get to that point. At 220F, the oil hasn't even broken a sweat.

Keep in mind that the gauge is not reading the highest temp the oil sees. Add 20-40F to the gauge. Spooler's 250-260F, on the gauge, would be bumping the 300F oil rating.
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