Originally Posted by rustyroger
Apperantly this was an oil approved by porsche (around 1991 btw), the car had 35000 miles on it at the time and a full service history,
20w50 & 15w40 were the normal weight oils used in Europe at the time. I agree 0w was too thin and 60 a bit thick however I wasn't about to say Porsche didn't know what they were talking about, I don't wave a flag for them but I don't dispute their reputation for high quality engineering.
Going back to filters a friend had a Toyota Celica, when he put a fram filter on it the oil light stayed on for a couple of seconds after starting, when he put a genuine Toyota filter on it went out almost instantly.
Likely due to the shitty quality of most Fram filters and the bypass valve opening too soon.
As for the weighs in oils, I sincerely think that someone at Porsche was out of their damn minds for saying that 0W60 is an approved oil when 20W and 15W were the normal grades. I can see the 60 grade when hot as a thicker oil with more viscosity being a potentially good thing, but when cold, that 0W oil is much, much, much too thin. That is a severe change from 15W and 20W. That oil probably slid right down the valve stems and right past the piston rings and got burnt right up. Had nothing to do with the manufacturer of the oil. Just flat out the wrong grade.
2005 Pontiac Bonneville GXP - For Sale ----- 1995 Buick Regal GS(X) - L67 madness
2000 Buick Regal GSE - Stock...for now
----- 1987 Jaguar XJ-* V12 - 12>8