Champ, looks like Wix offers the XP for extended synthetic oil change intervals, seems like it has features similar to the Fram Ultra.
But the correct Wix filter and what was on my engine is the Wix 51258. Doesn’t look like they offer it in the XP line either so the 51522XP is a smaller filter, same as the Fram Ultra XG9837. If the Fram doesn’t leak I’ll be a happy camper using it. The Wix would be fine if you prefer that brand and if it also doesn’t leak.
Chris, sorry about that. I am dealing with a small leak from the Muncie Trans Fill Plug so I crossed myself up when referring to the oil pan drain plug.
But now I have a question, what type of washer is used with the standard ‘64 GTO push on oil fill cap?
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