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    • #57013

      Local British car newsletters are warning their membership about the recent reduction of zinc dialykl dithiophosphate (ZDDP) in API approved oils. This is causing early failure in new camshafts; moly-disulfide assembly lube is not enough. Older, broken-in units do not have a problem from what I read.

      The problem is defined for "flat tappet camshafts". Does anyone know if this applies to standard 260 lifters which have "convex spherical shape" contacting the cam?

      Cheers, Gilles

    • #62753

      Yes, it does.

    • #62757

      There are oils that have maintained the old additive content (I think Shell Rotella T is in this camp) or else you might be able to get it as an oil treatment additive.

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