[Jeannie]

Originally Posted by Hantke

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ever use that royal purple oil treatment? its supposed to help with low compression and high mileage engines. I'm thinking about giving it a shot when I replace the oil.

Hantke,

Marvel Mystery Oil is a common additive for low compression issues. Many members report good results from it. If memory serves it is around $24.00 per gallon at major Wal-Mart supercenters.

-Jeannie

6066 GMC Club