How many people keep a car 300,000 miles? How many newer cars will have a problem due to lubrication in 300,000 miles? How many people will pay attention to this. Its mainly a gesture. Perhaps a handful of claims would go through, some nut that drives a ton and has strict oil change documentation.
Its marketing, etc.
I remember when Quaker state had a guarantee. Guy I worked with documented every oil change with there oil every 3000 miles. Well, engine took a dump at about 150,000 and by god, he got them to pay for another engine. granted he was a state trooper. but QS did live up to that promise in that instance
QS, Pennzoil, Havoline, and others have their own guarantees, there are obviously limitations with all of them. Some say you have to take your car to a shop that uses their oil, some say you can do the changes yourself. Interestingly I noticed that Pennzoil used to explicitly state that it's valid even if you change your own oil, however with the new website it doesn't directly say that any more (though it doesn't say anything to the contrary either). Obviously they all state you have to use their product and only their product, make regular changes within the interval they specify, etc.
What I find interesting is that the Valvoline website says you have to register your car before 75k miles. Most of the other ones require you to register your vehicle before 36-48k miles
I bought from Gary Allan ASM and SSO, it's sitting with my stash of PP, YB, Formula Shell, Pennzoil HM oil, and Peak Oil. I will be using it shortly, I hope they never have to pay out.
Back to the guarantee. A broken timing belt wouldn't be considered an oil related failure, over revving an engine would be abuse. We need something directly related to an oil related failure to see if an oil company would actually pay out. Then they'd be looking for exit doors.
They have paid out on claims in the past but have proven that it was of no fault of the product it was fault of the engine... But they still paid out. Ask the Amsoil sponsors... They stand behind their products!
You have nothing to worry about. I use their products religiously and have nothing but good things to say! My outdoor equipment even uses it! GOOD STUFF!!!!!
I hear you Stevie I am confident in Amsoil or I wouldn't have bought it. I honestly doubt the way I drive and maintain my fleet I will have any oil related problems. Living on L.I. you fear a car getting stolen, or destroyed while parked somewhere, and then the possibility of an accident with an uninsured driver.