quote:Originally posted by Trajan:
I'm not interested in what "dealers" are saying. I want the link to what mfgs are saying.
I also want the proof that car makers are pushing for what you claim.
I certainly haven't received any notice from a dealer to come in sooner than what the OCI already is.
GM 6094M is based on the same specifications as ILSAC GF-4 but additionally includes some specific GM requirements. GM 4718M is the GM high performance oil specification that goes well beyond the industry standard ILSAC GF-4 and API SM specifications. The Mobil 1 grades that carry GM 4718M have been fully approved and tested against GM 4718M. The companion Mobil 1 Extended Performance viscosity grades have not been formally approved against GM 4718M but will provide the performance at GM 4718M level. Engine testing required to get formal approval is limited to certain Mobil 1 products only.
This is for European cars including those imported to America:
This one comes from shell
This one talks about the politics behind the scenes in Europe and the U.S.
Pretty straight forward!!