#31

11-08-2024, 02:18 PM

Schurkey

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Join Date: Aug 2002

Location: The Seasonally Frozen Wastelands

Posts: 6,346

Quote:

Originally Posted by Verdoro 68

Yes, 15-50. I ran it because that's what Butler recommended. I have a Butler 60 lb pump with a shim and I was seeing the gauge pegged to 80 while cold and while driving.

For reasons of their own, Butler wants molasses in the oil pan. I think they're nuts.

Quote:

Originally Posted by Verdoro 68

The 15-40 I put in knocks the pressure down to 75-ish while driving and a little under 40 at idle when hot.

Next time, try 5W-30. MAYBE 10W-30.

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