Originally Posted By: TiredTrucker
Schaeffer will back the oil if they say it meets a certain standard. I would have no problem using it. No where is Schaeffer oil listed in the Cummins literature for my ISX engine, but I have no problem using it and the Cummins shop has no problem with it as well. Cummins just lists the spec and doesn't go so far as to have a recommended list of brands. If an engine oil supplier says that it meets a spec, and then an engine problem can be traced to the oil itself, then you would have a case against them anyway and they would have to ante up for the repairs or new engine. Just because a company doesn't "pay" an OEM for the right to be on an "approved" list, does not mean that their oil won't meet or exceed the standard. With litigation the way it is in this country, it is really playing Russian Roulette to say an oil meets the spec when it really doesn't. And Schaeffer has been at this game since 1834, so I wouldn't sweat using their oil. But if you prefer to pay more for an oil on an "approved" list, then by all means do so. I have no dog in that hunt.
And he knows that so I wonder why it even came up ?