Hi Gang:
I have fuel that is 10% synthetic, 10% castor and 10% nitro. How many oz. of castor oil must I add to bring the total castor oil content to safe level for use in the older lapped iron/steel engines like O.S, S.T.,Fox, Enya etc.
I have been advised that the 11%, 11% mix would protect my engines against damage and it was fine to use it in these older engines. I have had some very lean runs in the O.S. and Fox engines with no damage using fuel that had 6 oz of castor added to the 11%-11% mix with no damage! I have been advised that one can not damage an engine when one was using all castor for lube. I do not know if this is true, but I have never had it happen to me!
Perhaps I should just purchase some nitro and mix my own 10% nitro, and 25% castor to be safe!
Any thoughts about this question?
Tia,
Franchi