Thread: Is your car or RV ready for cow oil?

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Originally Posted by TooMany2count

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Meets or exceeds requirements of API SM, and previous API gasoline engine standards

I did see that, but not sure that I really believe it - especially the Ford spec which for whatever reason seems tougher then the other mfrs. To me, unless I really see test results is something like that warranty on a Slammer Chopper or a $10 tool guaranteed for life that is, three years later just send the tool plus $8 for return postage and the receipt to Kowloon, China for your replacement.