Gas saving items. Do they really work? Find out inside.

[MessyHonda]

Go to www.zmax.com and read the tests they've done. They are the only manufacturer of all the addives claiming to increase gas mileage that the FTC let off the hook, because they had rigorous tests (SAE, etc) to back up their claims. Looks like the additional mileage is about 4%, which would be 1 mpg for us. How much the cost of Zmax would offset that I don't know.

i remember i got some...i still have some...maybe we should do a test with my car...my transmition was going and i saw the add on tv and they asked for a credit card and they sent me one for like 30 bucks and then 6 months later they send me another one...i had to call them that i did not one any more and i still have the 2nd one...its like 4 years old in my garage...testing time then and see if it works at all

[Mars]

Ive been readong some of the octane comments, i accually get about 15-20% better mileage on 93...
Car definately feels more powerful.

Iunno, maybe its just my car, but i have compared mileage on the clock per tank with each grade and timed my car from various pulls, dont make a huge difference in power but the mileage is definately worth the extra... what... two bucks?