Quicksilver 92-858080Q03 Power Tune Internal Engine Cleaner Quicksilver Power Tune is used to remove performance-robbing carbon build-up from the combustion chamber. This engine cleaner can be used in all 2- and 4-cycle carbureted and fuel-injected gasoline engines. Power Tune works to restore lost power due to carbon, gum, and varnish deposits that accumulate in the combustion chambers of gasoline engines. These deposits are the result of normal engine use, low temperature operation, and the us