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Pennzoil 10W-40 High Mileage is what I put in. The guys who built the long block recommended 20W-50, but I just thought that was a bit much.


The reason Les is indicating it's a no-no is because there was a recent posting about Penzoil using Parafin based aditives which gum up the inside of your engine over time.

Castrol is one oil that doesn't.