Quote Originally Posted by Zombiebrew View Post
Oh and how much mystery oil do I add per fill up?

I do not have a bottle in front of me but it is roughly half the bottle pre 10 gals. Mixture rate is printed on same. It is easily found at Wally world. My fuel load is 15 gal, pour 1/2 of the bottle to that. Use it in the fuel systems of all my gas powered motors (4 cycle) .

some history:
Marvel mystery oil first came out in October 1923 to rid carburetors of deposits caused by unrefined gasoline. In World War II, Marvel mystery oil was actually used in ships, tanks, airplanes and other military vehicles. Marvel Mystery Oil has several uses in the automotive field. It can serve as an additive in the fuel system to help clean out any buildup from debris in the gasoline. You can also add it to engine oil at oil change intervals.


Amazon.com: Marvel MM13R Mystery Oil - 32 oz.: Automotive

32oz 8 bucks; in service as of 1923... good history there


Amazon.com: Sea Foam Motor Tune - Up: Sports & Outdoors


16oz 6 bucks;


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