is it true that a full tank gives better mileage?

[ptsmith24]

Originally Posted by dcb

Lol, does the phrase "This one goes to 11" mean anything to you guys?

Not until wiki told me, lol.

[dcb]

Yup spinal tap reference, LOL:

YouTube - These Go To Eleven

[PaleMelanesian]

Originally Posted by jamesqf

And another question: how on earth do you manage to fill your tank to 125%?

yeah, I guess that's confusing...
That's just what I use to show when the needle is above F. I do top off the tank, so it's usually 90-100 miles before it's down to Full. 110% is probably more accurate.

[metromizer]

Originally Posted by dcb

Lol, does the phrase "This one goes to 11" mean anything to you guys?

Spinal Tap?

[bgd73]

full tank works for every kind of fuel delivery, carb injection, straw and hand held pump whatever...

The goal is density, keeping it still. To keep a half tank decent...keep the temps above tank colder. Wagons could have a rubber truck type mat above thier tanks (My fuel increased). Sedans could line thier trunk too, hatchbacks. pickups get liners as well...there is a bizarre strangeness if fuel has zero escape above it, air related or thermal, it reacts noticably. The fuel pump will strain after mentioned tips.

An extreme to this phenomona is the crazy honda vid that was kicking around with a gutted interior. the top of the gas tank ruptured into the car, and that tank wasn't full to cause it. This is the very physic I talk of..its like gas has eyeballs to a way out with a defiance that won't make much sense...unless completely dark and cold..and even think of UV penetration...

[some_other_dave]

Originally Posted by gasti_ako

2. If a tanker truck is filling the station's tank at the time you want to buy gas, do not fill up; most likely dirt and sludge in the tank is being stirred up when gas is being delivered, and you might be transferring that dirt from the bottom of their tank into your car's tank.

Anecdote: A number of years ago, on a drive down to L.A., I stopped at a station that had a tanker there, re-filling the station's tanks. I thought about it for a moment (as I had read elsewhere about the "crud getting stirred up"), and decided to use that station anyway, as it was several cents per gallon cheaper than the others nearby.

About 5 or 10 miles down the road, my car started intermittently bucking. The engine was misfiring. Since I was out on I-5 in the middle of nowhere, I just had to keep on driving. When I got down to L.A., I found a car parts store and put "HEET" (alcohol) in the tank, and drove for a while longer. As soon as the tank was down to halfway, I re-filled it.

Things got better when I got through about a quarter of that tank (driving around the L.A. Basin) and re-filled the tank again, though they didn't completely clear up until that fill was about a quarter-tank gone.

It could be coincidence. I don't think so. I do know that I will never buy gas at a station with a tanker parked there if I can possibly avoid it.

...Oh, BTW: Gas stations do not pump fuel from the absolute bottom of their tanks. They pretty much all get water into the tanks, which goes to the bottom since water is heavier than gasoline. The pickup is actually up from the bottom some amount. So water will get stirred up when they dump fuel in there. I suspected that was what happened, though the HEET did not seem to help very much. Which it should have done if the contamination responsible for the misifiring was indeed water...

-soD

[SuperTrooper]

In the early '80s I worked at a small airport as an aircraft mechanic and also did aircraft refueling. Every morning we stuck our underground fuel tanks for level, and we used a paste on the stick that showed how much water was in the tank. Each tank had about 5" of water in it. After we'd receive a load of new fuel we'd stick the tank to confirm the amount delivered. The paste showed about an inch immediately after the delivery. We checked it after several deliveries and found it took almost an hour for the water level to return to normal, so we made a rule that we wouldn't fill the tanks on the refueling truck less than 2 hours after receiving a load. Water in aircraft fuel is potentially deadly. Every morning we drained 5 gallons of gas from each tank on the truck to remove the water that accumulated overnight.

Since then I've never gassed up at a station getting a delivery.

[Will]

Wow, Trooper. I don't think I will be either from now on. Thanks for that first hand knowledge. Helps with the perspective.

[crexcrex]

Take the time to add methylhydrate to the fuel and resolve the problem, it' the same as gasline anti freeze with one exception it is cheaper and you can buy it by the liter for about three bucks.

Nothing more than a passing thought