Promotes quick starting. Keeps carburetor and fuel system clean. Reduces gum and varnish build-up. Improves engine performance. Stabilizes gasoline up to 24 months. Treats 16 gallons for storage, and 32 gallons for everyday use. Replaces Mercury 92-817529A12, 92-78383A12. Replaces OMC 174275, 175068. Fits: Fuel system cleaner 4oz (12/cs)