new oil
This has been going on for a long time with the new oil messing up older engines.Common sence should tell you that an engine that was born and raised on 30 weight oil that its not a good idea to use 40 or 50 weight in. Kinda like the deal with our old hotrods not running worth a crap on this new ethanol added crap we have had forced on us .Anything that the huge corporate auto manufacturers can do to force people to update and buy the newer junk on the market they will,and then their dollar has the EPA making regulations to back them up.Back in the day there were only a very few places to get camshafts from,Crane,Isky,and now there are an abundant amount of cams on the market.Quality control is gone.[P