Originally Posted by ARCOgraphite
Never ever EVER put GL-5 in the engine. Bye bye bearings. Not compatible.
what filter did you use? Most noise I have is filter related.
Except with Mobil 1then it Oil related
I would DRAIN out a quart or 2 and add same M1 0W40 VAG Porsche MD LL oil .
NO STP NO gear oil !!!
I agree with ARCOgraphite on the gear lube.
Totally wrong additive package.
Some GL additives will damage copper containing alloys!
With due respect to ARCOgraphite:
I still maintain that no damage will occur from a dose of STP.
I once ran 50 percent ( or more
) STP in an old beater to prevent mosquito kills
.
Drove that car (307 70' Chevy Malibu) for several more years , then sold it still running.
As others have mentioned the warm up clatter does not necessarily equate with wear.
However it might equate with wear!
If STP quietens it down, drive on!
Please let us know how it turns out.
Rickey.