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June 16, 2019 at 1:44 am
#177314
Yes i believe the original specs (for that generation of plain bearing engines) was 16:1 (1/2 pint per gal.) mobileoil outboard or SAE 30 mix… not sure the quality of the original stuff. This was before my time. I’ve always understood that modern TCw3 is better stuff so mixes can be a little leaner. I have ’57 Viking 5hp that ran for years and years on 24:1 TCw3. In any event you can’t go wrong with a heaver mix.
A little information is a dangerous thing!