I have always with every car I've owned used products like STP and Rislone, then came Slick50. I now have a 54 yr old girl "Lady Blue" and changed her oil for the first time. I used Rislone 2 pints and drove for 100 miles to clean the engine, changed the oil and added Bars leak stop to hopefully seal the rings and the bore to stop smoking and seal the rear main oil leak. Do these chemicals work, am I relying on the Mopar God to much?
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