oil content for an os 91

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  1. Norm Doerr

    Verifying How Much Oil for a .90 Engine.

    Need a refresher on how much oil for .90 running 50% with a good blue/green synth. oil. (FHS, Morgans). Running and old O.S. 91 ducted fan conversion engine. Preference to making the engine live longer that one race Thanks Norm Doerr.
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