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There are lots of folks that waste their money buying STP and other oil additives out of ignorance. Does this mean that we should accord them equal credibility versus the engineers that design lubricants for autos/trucks/model airplane engines? I don't think so, Tim.

Castor oil has been proven superior for most model airplane applications for many decades now. Others have tried, but no one selling oil in the US has made the grade (excluding Cooper - not familiar with his products). Furthermore, if the manufacturer says to use all castor oil lube, there is no justification not to do so. Fox engines ran great on all castor lube, but if you switched to synthetic, even with a tad of castor oil, you grossly shortened the engine's useful lifespan and lowered the engine's performance. Sometimes, just once in a while, the old things are still the best things and sometimes the old farts are right.

I went through an "all synthetic lube" phase in the early Eighties myself. I hated getting that gooey castor oil all over my pattern ships. I did make out okay with the synthetics, but you really had to be on your toes regarding tuning, especially when using a tuned pipe.

I'm using model slang here, so no one need to display their pedantic side by correcting me. Although, if you really must, I guess it is okay. <G>


Ed Cregger