I haven't really looked into it... but I'm thinking premium gas should be the only thing entering the tank. EnviroTab makes a claim about carbon building up in engines. If you have carbon building in your engine then you got other issues that a pill is not going to solve. If you are looking to add power then look to the mod section on this website. If you are looking to save on gas then sell the car and buy a moped. That EnviroTab is a scam. Save your money.

Or get a tune I've heard.

Increased gas mileage from a pill?:shakes head: It must increase the calorific value of the fuel, right?:ugh2:

I knew I would be getting some winning answers on this one!! At any rate, whether these work or not, you guys cant be crazy enough to think that if this WERE possible, the car companies would have done it a long time ago? Sure they would have....it's their sould purpose to help mankind and make OUR money go as far as it can, not the fact that they are in buisiness to make money! Dream on!! The only reason the US cars came back around was cause the Japanese inports were putting us outa biz baby, with our cleenex cars we were making back in the day!!

I remember a TV commercial for Olsmobile in like 1979ish, where they have a Cutlass and an Accord on the screen, and the guy says " Honda Accord, Japanese import......it's GOTTA get more miles per tankful than this Oldmobile cutlass right? But actually this Cutlass gets 120 miles more!! NOW which car do you wanna buy??" And how many morons went out and bought a Cutlass thinking they were getting more MPG than an Accord, not even realizing they said MILES PER TANKFUL and NOT per gallon! Honda had a 10 gallon tank versus the Cutlass' 20 gallon gas tank!!! Talk about deception in it's best form!!
:shakes head:

There was a car company that actually was making cars for the people, with all kinds of advancements and innovations, about 60 years ago or so, and the Big 3 put the squeeze on him and his company! Was Called Tucker!! Politics my boys!!......Politics!

:icon18: Why not throw some Viagra in the gas tank? Hell your gas will go & last longer. I'm just saying.......:eekdance:

if you put viagra, would you have to commit to a minimum four hour drive?

If the drive lasts longer than that, you should call your doctor immediately.

:bowrofl:

If so then the you go to the track to wind it down, or some really good long spirited driving. Hopefully by doing either one of these you can knock off two hours.