Quote Originally Posted by Vipaworld
how did he determine the oil was the cause??? If he had taken an oil sample and the results showed the oil was the cause,,,then I could believe him...but without an oil sample,,,an opinion as to why you had the problem,,cannot be based on the oil....I am sorry.....but proof.....not speculation is needed......

If you use the same engine builder, then switch oil and start sticking valves in the guides and blowing engines, then switch to a different oil and things quit breaking, guess that would be all the proof I need..... Oil analysis is to primarily show contaminants, either liquid or solid, in the oil and analyze the condition of the rotating components' bearings.... IMO a good engine builder would be more the expert at diagnosing cause for failure then some lab that looks at only the oil... One of our local guys lost a couple engines he had Amsoil in last summer, too. Came back to Mobil 1 and no more problems. Maybe not irrefutable scientific proof, but I guess it's good enough for me!