Join Date: Aug 1998
Location: Waldorf Md. USA
Re: Oil pressure
It should be fine. One thing you might want to do is verify the gauge is correct by plumbing in a mechanical gauge temporarily as a check. I would personally put the 10W40 back in. As long as it stays where it is and does not start going lower I wouldn't worry about it much. That year engine probably never had much more than 40 lbs hot even when brand new.
Advanced Automotive Machine
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