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[QUOTE=gregwils;4972209]It sounded like you were suggesting to change your oil, then add Chem or Techron. The more common approach is to add these additives just prior to your normal oil change cycle. The recommendation to add these gas treatments just prior to an oil change because they can seep into the crankcase and they really aren't designed or intended to be there. Most formal and informal evaluations suggest that Techron and a few others do a good job of removing deposits and operating smoothness of the engine.
+1 on the Brad Penn comments or adding ZDDP. Not all synthetics would be good for your car. Focus on the brand of oil and whether it meets the specific needs of your car, not the general category.[/QUOTE
No, no, I specifically mean using the gas treatment, then change your oil with something cheap and just have in your car for 20-30 miles, THEN drain that, and do an oil change with what would be your normal oil (brad penn, etc.) I don't know where in my first post I suggested doing the gas additive AFTER an oil change, but that would be completely counter to what I'm trying to achieve with the double oil change. Basically the first 20 mile oil change is used to wash out any extra carbon, gunk, etc. the gas treatment dislodged but didn't come out with the first draining.
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