Lets say you're running a car from the early 1990's calling for an API SG oil. The vehicle is used in what was then considered "Severe Service" conditions according to the OM. Servere Service calls for 3 month 0r 3000 mile OCI's.
Fast forward to 2009, same car, Severe Service now using API SM oil. Since the OM calls for 3 month 3000 mile OCI's in the early 1990's based on an SG category, what would the new OCI be for the 2009 SM oil used in that old car? We all know the SM oils are better, lets get some opinions. Lets keep the discussion to dino oils for now.
Is the old 3000 mile Severe Service OCI really 5000 miles today? We had this discussion over some beers yesterday, thought I'd try it here.
TIA,
AD
Fast forward to 2009, same car, Severe Service now using API SM oil. Since the OM calls for 3 month 3000 mile OCI's in the early 1990's based on an SG category, what would the new OCI be for the 2009 SM oil used in that old car? We all know the SM oils are better, lets get some opinions. Lets keep the discussion to dino oils for now.
Is the old 3000 mile Severe Service OCI really 5000 miles today? We had this discussion over some beers yesterday, thought I'd try it here.
TIA,
AD