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?