In Reply to: I agree with you 100 %. But, do you think that posted by Paul E on June 15, 2000 at 12:15:59:
Most dealers would honor the receipts as proof that the oil and filter was changed "but" in the case of a major problem that may be caused by the lubricating system things could turn ugly.
I have two BMWs. There is nothing to prevent me from buying oil and filters and NOT using them in one of the cars. I could re-sale the oil and filters. Just because you buy the materials to change the oil and filter doesn't mean you actually did it. Therefore I agree with you.
In my opinion, it's just not worth the concern or the possibility, however slight, that you might be challenged about this. Documentation of purchasing the "goods" (oil and filter) is not the same as documentaion of purchasing the "service" (oil and filter change).
On another note: With all this discussion recently about the "quality" of different brands of oil it's interesting to note that it is a well known fact that virtually 100% of all lubrication problems are not caused by the quality of the oil itself but because of either the lack of it, it's contamination or the wrong choice in viscosity! This is true for every type gas or diesel engine from lawnmowers, motorcycles, automobiles, freightliners, generators, earthmovers, etc.
: retaining proof that you bought motor oil every 3 mos or so is enough to prove that you changed the oil...Maybe you bought it, but gave it to a friend, or hid it, or drank it...Anything...See, I think its real hard to prove you put oil in your car. Usually, though, a mfg will take it as 'sufficient' proof to offer up receipts, when combined with an otherwise well taken care of car. But technically, I dont see how purchase receipts constititues proof of use.