Why have castor oil in your fuel opposed to synthetic oil? - RC Groups
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Aug 08, 2007, 10:34 AM
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Sir-Ipswich's Avatar

Why have castor oil in your fuel opposed to synthetic oil?

also where can i get some cheap?
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Aug 09, 2007, 07:48 AM
Airplane Gearhead
A small % of castor will give some added protection at higher temperatures, (it has a higher "flash point" than most synthetic oils) and will also help protect the steel parts from rusting, because it leaves an oily film on the parts.

Try a motorcycle shop...or anyplace that has supplies for 2 stroke engines. You can add 3-4 oz. to a gallon for a little extra protection.

In an R/C car engine, too much castor can cause the one way bearing to get sticky after a while...that's one reason why you don't see castor advertised much in r/c car fuels. (they're mostly a high % of synthetic, or all synthetic)
Last edited by proptop; Aug 09, 2007 at 07:54 AM.

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