Marvel Mystery Oil lubricates the entire fuel system, fuel pumps, fuel injectors or carburetors and the top portion of the cylinders. These are areas that by design, motor oil does not reach. Using Mystery Oil in the fuel extends the life of these vital components by providing them with lubrication that fuel alone does not provide. It reduces and prevents varnish and gum build-up, two key contributors to robbing engine performance. It also creates a cleaner burning cylinder environment that reduces carbon build-up on the spark plugs resulting in better firing plugs that increase performance and durability. In addition, adding the Mystery Oil in the engine oil will prevent the valves from sticking and clattering and prevent oil breakdown caused by extreme temperatures.

Features when added to gasoline:

• Helps improve fuel economy
• Cleans and lubricates fuel injectors and carburetors
• Reduces and prevents varnish and gum build-up

Features when added to oil:

• Prevents valve sticking and clatter
• Prevents oil breakdown caused by extreme temperatures

Includes:

• 6 bottles of 946 ml (32 oz.)