I was showing an example of where an "acceptable" allowance is considered binding, whether you agree with it or not. It sets precedent. You not "accepting" the relevance doesn't make it not true. <--see what I did thereI don't doubt that happened. The owner's manuals for the two Subaru's I've owned stated that 1 qt every 1000 miles is acceptable. But what does that have to do with oil change intervals? And you didn't address the legal aspect. You said there is a tolerance that they have to allow. Where is the law which states this because I'd genuinely like to know if such a law exists.
I already admitted I don't know what the acceptable -/+ in mileage is. I know I had a goodwill warranty repair done on my truck that was 3000 miles out of factory warranty. Because it was within the "acceptable" amount of time after factory warranty expired to be allowed. The dealer told me what the actual amount of time and miles over were allowable, but I forget what he said.