Reply to "API CF"

emMember

Well it can be said for practically every classic from before '65, at least for European brands...

I'm not saying that the retrospectivity of API must be doubted, but possible reaction with materials in seals and gaskets is often forgotten in these cases, so therefor it's advisable to be extra careful when using a brand new (high API) oil in a old (low API) engine. This risk can vary per company as each has it's own phylosophy (thus base oils + additive packages) to meet the API approval.

8/4/0810:55 PM

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