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Old 07-02-2019, 04:28 PM
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Originally Posted by w-lewis View Post
I have a 351W with a 9qt oil pan and an oil cooler. Oil temp gauge needle rises to just slightly below the 140 mark, never exceeding that, causing me to question whether the gauge works properly. I've tried taping up the cooler opening and the temp rises to slightly above the 140 mark, but no more. Not sure where my temp sensor is located, but will check. Is my gauge wrong or is my oil temp unusually cool?
If that is the true oil temp, and never exceeds that, you need to do something about that, or start changing your oil more frequently.

The combustion byproduct acids don't start to boil out until 180.

Acid build-up in engine oil eventually destroys bearing metal in rarely driven cars.

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