Castor in the fuel (Except in YS engines) is correct for these reasons:

Anyone telling you to run all synthetic has their head in the sand. Anyone telling you that some castor in the fuel will gum up an engine has their head further in the sand. These folks claiming this don't know that:

1) good quality castor oils like Klotz brand, (which is the same brand that Wildcat fuel uses for their Premium and Premium Xtra fuels, and any of their castor content fuels) are very good quality and "degummed" which means they are clean burning and offer superior protection. Yes, they will turn your piston a caramel color, but that is fine, means the oil is working properly, and it is not gumming up your engine. Castor oils from 40 yrs ago, were not "degummed" and would run much less clean. And they were ALL castor content fuel lubricant package. Not 20 or 30 percent of the total lube amount. I think the anti castor guys don't want to accept this or realize this. Old and outdated word of mouth dies hard.

2) Castor oil is a superior lubricant, especially to protect against hot and/or lean runs. Part of the job of oil in the fuel, in addition to lubrication, is to carry away heat, or "heat disippation". Castor does this better than any synthetics can. The engine gurus know this, recommend this, and will tell you this if you read their engine reports/columns, i.e., Dave Gierke and Clarance Lee.

3) Because synthetic is a different chemical composition than castor, increasing the content of synthetic from 17% to say 22%, (or whatever) will not give similar protection as castor. Because they are different oils, no amount of extra synthetic added can make up or duplicate the qualities of castor. This is because they are different.

Am I against synthetic? No. I suggest and believe in fuels with BOTH castor and synthetic lubricants. Ideally 30 castor and 70 synthetic. (or 20/80 if you like) This is because each one has certain qualities, strengths, and weaknesses. Used together like in Omega, Wildcat Premium, and Premium Xtra, you will have superior engine and bearing protection than all synthetic.

If you really want to be kind to your engine, run a total lube amout of 20%, divided 20 or 30 and 70/80.

As far as all synthetic proponents, they are the same guys telling you to forget the low rpm breakin on a 4 stroke with a test stand, and usually tell you to breakin the engine flying the plane.

And don't forget this: All synthetic only guys seem to justify the use of all synthetic lube by saying that the engine runs just great. Well sure it does, but that doesn't mean anything. The point is that it will WEAR LESS and LAST LONGER by using a fuel with castor content. And if that's the goal, castor is the ticket. Period.


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