Tips for better utilizing your fuel economy.
1. Turn the nozzle
When you have finished filling up your gas tank try turning the nozzle
the hose a full 180 degrees.
This will drain a bit more gas into your tank; in some cases up to an
entire half cup that would otherwise be a bonus to the next gas
Once you get into the habit of turning the hose you'll find yourself
it without thinking. That extra half cup that you get each time that
your gas tank can add up to a lot of extra gas at the end of the year
never have known about.
2. High octane gas
MILES PER GALLON BOOSTER
For most cars these days, buying higher octane gas is a waste of your
money. Regular unleaded has approximately 87 octane already and is
By avoiding buying high octane gas you'll be saving a large amount of
money over a period of time.
High octane gas is always more expensive at the gas pumps so the next
time that you feel guilty for filling up your SUV with regular gas you
assured that no harm will come to your vehicle.
Octane is simply a measurement of how difficult it is to ignite the
your car and has nothing to do with the quality of the gas. If you are
experiencing engine pings, rattles, or knocks you can switch to high
However, you shouldn't be experiencing any of those knocks and rattles
if you are keeping your vehicle maintained and making sure that you
those scheduled maintenance checkups.
If you are driving a new model car you definitely shouldn't be hearing
any pings or rattles and if you are you should take your vehicle to a
3. Avoid topping off
Try to avoid "topping off" at the gas pumps. When you purchase just a
bit of gas at the gas station the pump doesn't have enough time to
activate, resulting in short bursts of fuel that may short change you
amount of gas that you are purchasing.
The best time to replenish your gas tank is when you have half a tank
less left in your vehicle, or when you find a gas price that you just
4. Avoid running your gas tank too close to empty
Try not to drive your car when the gas gauge is on empty.
You may think that you using very little gas when your car is on
but you are in fact using more gas because your vehicle is running
efficiently as it tries to accelerate and decelerate in a normal
Keep your gas level above the quarter tank mark if at all possible.
5. Avoid buying gasohol
You should never purchase gasohol for your car since it contains only
two-thirds of the energy of gasoline.
This means that you would need to buy much more gasohol to go the
same distance on a tank of gasoline.
Gasohol is a mixture of ethanol (alcohol made from grain) and gas, and
used by some farmers to help cut the amount of pollution in the air.
Even if you are traveling and it seems like the only fuel choice for
is gasohol try to avoid buying this type of adapted fuel.
7. Avoid buying gas from a just replenished gas station
When a gas station has its underground tanks filled, the particles at
bottom of the tank are stirred up.
These particles can become mixed in with the gas that you are putting
into your car, which can lead to efficiency problems. The particles
your fuel filter, causing your car to stall and start with some
If the gas station that you have decided to stop at has the lowest gas
price in your area you may want to think about taking the time to come
a later time rather than stopping at the next gas station that is
higher price for gas.
8. Keep your car well tuned
One of the best things that you can do is to keep your vehicle as well
tuned as you possibly can.
This means taking note of those regularly scheduled maintenance
checkups that you so often ignore.
Studies indicate that a car with an engine that is poorly tuned will
increase the amount of fuel consumption from 10 to 20 percent.
Information found at www.fueleconomy.gov/ shows that when you tune
up a car that is due for a checkup or one that has emissions problems,
increase the gas mileage by up to 4.1 percent.
Learn more tips
Not true. Ethanol does contain approximately 70% of the BTU/energy value of
gasoline. However, if you have the standard gasoline/ethanol mixture of
90/10, then the final product will contain 97% of the BTU/energy value of
I agree with MOST of these but some of these are 'math issues' only to
the extent that they are true but totally inconsequential.
Premium fuels are usually more additives as well as higher octane. But you
are correct in that if you don't get an immediate benefit, then buying
fuel is a waste of money. What benefits you get from premium depends on
the gas mix. Some suppliers mix all the additives the same for the
mid-range gas the same as the premium, so that's something to consider.
In most modern cars, if your octane is too low, then the engine can ping
and knock. If this happens, the engine computer will retard timing,
resulting in poorer performance and the driver then tends to use MUCH
more 'pedal' to compensate, resulting in much higher gas consumption.
City driving by it's stop and go nature seems to disguise this more than
highway driving. I had a high performance vehicle that required 92
octane and at least that's what I observed when I used lower octanes.
Highway driving was where the high octane really seemed to help milage.
I used to service Gilbarco and Tolkheim pumps and that's not significant.
At least, it wasn't significant enough to affect calibration checks. But,
when you 'top off' you usually spill quite bit. So the advice not to top
This is totally messed up. Just the weight difference from driving
near empty is significant enough to make a difference in small
vehicles. However, low fuel reserves and the added stop and go
of going to the service station can kill that advantage pretty quick.
You do get more evaporation in an empty tank, but with a sealed
system that should be minimal as well. In the winter though, there's
an added problem with condensation.
Gasohol is good and bad. Good in the sense that the alcohol can actually
'flush' your system of moisture and some other impurities. Bad also
because it can flush your system. One big advantage though is that it
allows moisture to 'flush' out. One big detriment is that high alcohol
content can cause certain rubber and other synthetic parts in the fuel
system to 'dry out' and even damage. 10%-15% shouldn't be too bad
in modern vehicles. Unless your vehicle is SPECIFIED for alternative
fuels including alcohol, I personally would not go beyond 15% alcohol
unless it was a CRITICAL emergency, and then only if I was running
it out and able to 'fill and flush' with 'whole gas' immediately. I'd get
just enough to get to where I could fill with whole gas.
I'd worry more about the water than anything else, not sediment. Sediment
should be caught by the pump filters. Water is SUPPOSED to be tested
for and eliminated but some service stations wouldn't bother doing anything
unless the whole damn pump shuts off!
This is the best advice I ever see! My Intrepid dropped drastically to
under 14mpg and it started 'surging' when I was on the highway with
the cruise set. The car has over 190K miles on it. I replaced the O2
sensors and it brought it up to about 18mpg but the surge was still there.
I pulled off the intake and replaced a valve in the EGR that was
malfunctioning, and replaced all the filters and the plugs. I got to 20mpg
but the surge was still there. Finally I bought a new set of high voltage
wires. The surge went away and my highway mileage is up to 26mpg.
Also, keep the rest of the vehicle in shape to match. That is, tire
and alignment. And don't forget to check for things like dragging brakes!
The idea centers on the assumption that the nozzle is tipped up enough
in use that the spout acts like a cup and retains fuel after shutoff. Yeah,
it can. But it really depends on the nozzle. Next time you fill up the
gas can for your mower, give it try and watch how much (or how little)
comes out after you shut the nozzle off. Let it stop, then twist the
nozzle all around. Then decide how many CCs come out. (And this
is a tip to get you to buy a book to save you a ton of money?)
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