it can very from 3/4 7/8 to 1in
just depneds upon what the station uses
and its not just the fuel from the hose but the solnoinds that control what fuel is in there is actauly inside the pump down towards the base
The math never lies:
.375^2*3.142*144/231=.275gal. :3/4"x12' hose
.4375^2*3.142*144/231=.375gal. :7/8"x12' hose
.5^2*3.142*144/231=.490gal. :1"x12' hose
Formula
d/2^2*pi*length=vol in cu.in./(231cu.in./gal.)=vol in gal.
d=diam. of hose
/=divide
*=multiply
^=to the power of (squared in this case)
all figures rounded to third decimal pl.
Assume 6"x7/8" line from metering device to exterior of pump=
.4375^2*3.142*6/231=.016gal. to be added to each figure to allow for inside pump housing holding volume between metering device and hose fitting.
Other gas saving tips:
Always use the automobile for short trips that is already warmed up.
Switch off ignition if car is to be stationary for 30 sec. or more.
Coast whenever possible by shifting to neutral in automatics or killing the engine with a manual.
*Gather momentum descending hills by exceeding the speed limit slightly.
Ascend hills using left over momentum and gently tip in the throttle as you encounter the incline, gently easing off throttle shortly before topping the hill.
Do not warm car up for more than 10-30 seconds. An engine under load warms up much faster. After driving away short shift (w/o lugging) to load engine more and warm the engine up even faster.
Get the junk out of the trunk, etc. (especially important in stop and go driving)
Keep tires aired at at least mfg. recommendations. Ideally, at the maximum stated load pressure on the tire wall.
Inflating your tires with nitrogen helps them maintain pressure and prevents oxidation of metal wheels as well as rubber.
When possible keep several car lengths between you and the car ahead to prevent constant brake/throttle actuation.
Look ahead and anticipate other drivers moves and plan your responses accordingly.
Coast with foot off throttle as much as possible.
Use throttle and brake smoothly and gently as possible.
Anticipate traffic light changes and adjust speed so that stopping will not be necessary
Cars usually are more efficient when the engine is lightly loaded, so downshift well before the engine begins to labor.
When cruising at high speeds into heavy head winds with manual transmissions downshift out of overdrive.
Night driving gets better mileage than daytime driving due to moist cool air.
If you live on a hill and park in the street or in a driveway that slopes down to the street bump start or coast as much as possible before starting.
*Use the grade of gasoline recommended by the manufacturer. Cars are designed to operate on even lower octanes than manufacturers recommend. The recommendation is for best performance only in most cases.
Use air conditioning only when necessary. Tinting your windows helps here too. Below 45-50 mph open windows generally have little negative effect on gas mileage. If the buffeting is acceptable and ambient temperatures allow drive with the dash/floor vents open and the rear windows down 2-4 inches.
Use lighter, fuel-saving (synthetic) oils if permissible.
Don't ignore spark plug changes when due. Keep airflow to radiator free and keep air filter clean or replaced.
Remove luggage racks when not needed if it is convenient to do so.
Dropping the tailgate generally does not improve fuel mileage on pickups. It increases your chances of having the tailgate damaged in rear end collisions too.
Leave below bumper valances (air dams) in place if driving conditions allow to maintain fuel-saving aerodynamics.
Use smaller exterior mirrors if practical.
Z-max makes pretty good sense to me.... keeps engine super clean for sure. Most studies show a few percentage points of fuel savings.
Keep your automobile clean and waxed.
Avoid buying gasoline while under ground tanks are being replenished.
Tall tires and lifted vehicles get terrible mileage.
Purchase tires labeled
fuel saving Find the best ones in
Consumers Reports.
Keep the front and rear wheels in alignment.
Remove and stow windshield wipers in vehicle in dry climates.... keep a water-repelling chemical film on the windshield for breif showers.
* These techniques can be somewhat dangerous if you do not possess the strength to steer or brake your car with the engine off. Be ready to bump start quickly.
