I always thought this stuff was a load of BS. I had the whole back up or just go with it dilemma at the pump last week and decided to bite the bullet and pay for it. Well I got 5mpg better measured economy on the same trip.
I stuck another tank in just now and I will put my box back to the less aggressive setting to test it for real but what are your observations if you have tried it?
I stuck another tank in just now and I will put my box back to the less aggressive setting to test it for real but what are your observations if you have tried it?