i was pulling engines that were built in the early 70's apart in the late 80's, and most of them had cams with mostly round lobes on them... that was back when the oil was still "good", and these were completely stock engines (mostly Chev small blocks, but there was the odd Mopar LA small block and various Ford engines thrown in there) with valvesprings that you could damn near push open by hand.
so cams going flat is nothing new.. maybe the additives help, but it's also possible that the changing oil formulations might not have been the root cause of cams going flat and the additives just mask some other underlying issue.
so i'll ask again, what is so special about a turbocharged Buick engine compared to any other flat tappet internal combustion engine ever made that requires a special additive package? what laws of physics are different in these engines compared to other engine families? how come i hardly ever read about cams in V8 engines going flat any more, and how come some cams still go flat after adding stuff to the oil?
