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Marvel Mystery Oil can be added to gas or oil. It combats internal motor rust and corrosion - lubricates valves - piston rings - upper cylinder walls - and eliminates valve sticking. Keeps rings free and reduces piston and cylinder wear. Also keeps fuel pump and carburetor parts clean - eliminating the need for frequent adjusting. Marvel Mystery Oil retards formation of power dissipating motor deposits - such as gums - varnish - and sludge. CLICK HERE for more information and price |