I've seen a few stores do it, but I've never been positive what it exactly added to their bottom line. As someone said, several oil vendors will offer a similar program is you use their oil.
The point being lost here is that it is usually an empty promise because (1) most new vehicle buyers don't keep a car forever, and (2) most won't get every service done. Out of those who actually keep their vehicle 50,000+ miles, and have regular servicing, it's still a small percentage that will run into trouble (depending the makes you sell).
If it worked as designed it would make money. If you were able to retain 100% of your customers, and they did even 100% of the factory's recommended servicing then you'd probably come out ahead of the game at the end.
But again, why would you want to take that risk when QuakerState or someone else is willing to do it for you. (I think Wynn's still has some programs as well.)
The bottom line is, really how many of your customers would be swayed by this promise of a life-time warranty to make sure they got back in to do the service? You know your customers better than anyone to be able to answer that.
The other point, is on the requirements. Of the programs I have seen they required that the customer follow the manufacturer's severe use schedule and have the service performed within 1,500 miles (45-days) of the date. If you have something that is recommended above the manufacturer's recommendations then that's your job to sell on the drive - don't ever represent it in any manner as "required" because you lose creditibility.
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** Rob, Editor WD&S **Help is only a message post away!
robc@dealersedge.com