[WFBowen]

I know MMO from auxiliary marine motors (usually Palmers and Atomic 4's)where "old timer" mechanics use 1qt MMO for every 3 of non-det. oil. I haven't had experience running it through the fuel system. Assuming you still have the L-Jetronic FI, I'd be hesitant, as it might harm the fuel pump/injector/press.reg internals, etc. I'd play it safe, since this is a relatively modern motor.