- Mar 8, 2012
- Colorado Springs
Let's say everything is OK with you engine. Euro oils are more sophisticated with higher restrictions. If oil is (and castrol 0W40 is) approved for MB 229.5, NOACK is max 10%. That means less catalytic pollution. Even Shell Rotella, old version, had NOACK higher (12.6%). For example, Castrol 0W40 is 9.1%, Mobil1 0W40 FS is 9%. So, your truck engine (gas I suspect) will do perfectly fine. This comparison is pretty ridiculous. It only talks about wear. But, as someone asked: is difference between 203 and 256 really something to worry? What about other stuff? Deposits, catalytic pollution (Castrol 0W30 will be best in that) etc.?
Originally Posted by BlueOvalFitter
Well, I think this answers my Q? about using it in my trucks engine. Q?: Does Euro oils (Castrol 0W40) ruin American vehicle catalytic converters?
Originally Posted by turnbowm
Several years ago, Shell Technical indicated that, with the exception of Rotella T6 Multi-Vehicle, T6 should not be used in gas cars/trucks with catalytic converters. Don't know if anything has changed since then. https:/
/ en.wikipedia.org/ wiki/ Shell_Rotella_T