Gas mileage and Fuel Treatment

[kieefer]

Water does indeed work for removing carbon buildup, as does Seafoam. If you are nervous about pouring water into your intake (which is perfectly fine by the way, but don't pour in too much) use transmission fluid. Really anything that will steam up will cause the carbon deposits to break loose. I suck about 8 oz of Seafoam in through my intake vacuum line in my truck every 10,000 miles or so. It's kept it running great.

I remember seeing some contraption in Popular Mechanics back in the mid-70's where you added essentially a water bottle and a vacuum hose to your cars intake. The big claim was increasing fuel mileage. Apparently it never became popular.

[strickj]

I figured it might

be a little better and continued using the stuff at the Kroger pumps. I was wrong about

that. There is a noticeable difference between the two types of gas and I have started

using the non ethanol stuff regularly.

Could be the brand of gas or even the station itself.

It's not uncommon for the little man-hole thingies to leak allowing water and other fluids to get into the station's tanks.

[peejman]

Thanks Mac. I don't see a rebuild in my future, lol and i am not personally doing the water thing. Might be worth it to risk seafoam.

If you try Seafoam, don't pour it in the tank, suck it in through a vacuum line. Warm the engine up first, don't do it in the garage, and make sure your house is upwind. It'll smoke like a freight train.

[Guest 6.8 AR]

Are you guys talking about the Seafoam treatment used for mileage, to be used for

carbon build up, also? If you are, pure acetone can be had at the hardware store for

about 1/4 the price. That's what I used in the gas tank.

[Guest Tailguuner762]

Started using Sunoco no ethanol gas and noticed a 2 mpg increase!

[Guest Lester Weevils]

Taking the advice about using 87 octane gas in the 2010 Wrangler-- Maybe I'd been non-critical sometimes fueling with 89 and sometimes 87 octane because didn't know it would make a difference-- On ethanol gas always at 87 octane the mileage seemed to have crept up near the 19 mpg mark for my mix of city-hiway, which is the hiway estimate for that model year. Kinda low but after all it is a concrete block on wheels, and I hardly drive the thang so it isn't real expensive. That was maybe 1 or more mpg better than ethanol gas when I wasn't paying attention between cheap and mid-price gas.

The midnite oil stations where I'd tested the non-ethanol gas and got bad mileage-- They only sold non-ethanol out of the premium pump so most likely it was too high octane that the Jeep didn't like to run on (just like the feller said).

Using that non-ethanol gas search web link, found a nice little station out on Dayton Blvd in my neck of the woods that sells all grades non-ethanol gas. Preliminary findings subject to revision-- After running about a quarter-tank of the 87 octane non-ethanol, the dash panel fuel efficiency readout has inched up reading in the vicinity of 20 mpg, about a mile better than 87 octane ethanol gas. Maybe it is a fluke, or possibly it might settle on a figure slightly higher. I don't recall it ever reading up in the ballpark of 20 before.