not a
rocket scientist but one thing come's to mind, if it sounds to good to be true, it probably is....
LOL
That's what I was thinking....but the 8% saving they claim would be nice. If they were guaranteed savings their sales would skyrocket.
notice
Ever see something with a big claim and no warranty? Unless you can follow your degree day's and usage, there would be no way to know if you saved or not. I'd sooner put the money into a good tune-up and go from there.
Mechanics in a can:
My old Auto Shop teacher in High School had a saying, "You can't buy a mechanic in a can.". He's never been proven wrong in my eyes.