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  1. Alternative Fuels Diesel Additives Lubricants
    Hey has anyone used an alternative to the GM Top Engine Cleaner for the concentrated cleaning process (where you plumb in a small fuel tank and run 1/2gal diesel plus the cleaner)? I have read that GM discontinued the X66P and the new one (10-3015) may or may not be as effective, nor made for...
    additives injector cleaner injector cleaning
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