Tartan 27' owner
Join Date: Jan 2008
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Yes, using Marvel Mystery Oil (MMO) in the fuel is not my idea but Don Moyer's (rebuilder extrodinare of Atomic 4 engines). I believe it is the rust inhibiting properties of the MMO as well as the extra lubrication which are beneficial to the piston rings and valves.
I have heard of some people using the blue 2 stroke oil as well.
2 ounces per 5 gallons of fuel sounds about right.
I also use MMO to fog the cylinders for winter layup. This can cause a slightly smoky exhaust for a short time during spring commissioning but hey, it is a 43 year old engine - it is supposed to smoke a little.
"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen
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