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Change the air filter regularly. A dirty filter can lower gas mileage.
Maintain the recommended level of air pressure in the tires. Drivers can lose two percent of fuel economy for every pound of pressure under the recommended pounds per square inch.
Drive at 55 mph. ests have shown that a car driven at 65 mph will use 17% more fuel than one driven at 55 mph.
Fill up early in the morning. The afternoon sun can heat and expand the gas in the station's fuel tank so drivers get less for their money.
MOD CUT no Advertising has some really nice products that improve engine performance, miles per gallon, reduce emissions, and so much more. Cheap too
Last edited by Ultrarunner; 06-03-2008 at 06:46 PM..
Reason: easier to read
The air filter makes no difference in MPG for a fuel injected vehicle, only with a carburator. The fuel filter is more important for FI cars.
There is no magic in driving 55. Some cars get noticably better MPG at lower speeds, some don't. Most German cars maintain reasonable fuel consumption up to 100 MPH and over.
Buying gas early in the morning *might* give you a very slight increase in mass per gallon but the effect would be very slight. Most gas stations have underground tanks and the fuel stays pretty much at a constant temp.
Not only are 2 of your suggestions wrong, this is likely SPAM and is being reported, and that junk on the site you linked to (which is likely yours) is snake oil.
I think driving habits play a bigger role in MPG numbers. Someone can drive 55 all day, but if they are accelerating hard from stops and speeding up to stoplights and signs, it's not going to be all that much better.
If you want to read about some driving techniques that are proven to work, search the web for "hypermiling".
There is no magic in driving 55. Some cars get noticably better MPG at lower speeds, some don't. Most German cars maintain reasonable fuel consumption up to 100 MPH and over.
i would tend to guess that fuel consumption would actually be based on rpm eh? which is why "overdrive" typically results in better mileage at highway speeds, since you're running at lower rpm once the overdrive kicks in
Change the air filter regularly. A dirty filter can lower gas mileage.
Maintain the recommended level of air pressure in the tires. Drivers can lose two percent of fuel economy for every pound of pressure under the recommended pounds per square inch.
Drive at 55 mph. ests have shown that a car driven at 65 mph will use 17% more fuel than one driven at 55 mph.
Fill up early in the morning. The afternoon sun can heat and expand the gas in the station's fuel tank so drivers get less for their money.
MOD CUT no Advertising has some really nice products that improve engine performance, miles per gallon, reduce emissions, and so much more. Cheap too
while this is true heres some facts. as far as driving your cars at 55mpg . thats great and all but the reality is that the reason lowering your speed increases mileage is because your rpms are lower which takes strain off the engine. They should say instead of ddriving at 55 make sure at all times you keep your rpms at 2.5 rpms or below. every vehicle is different and goes different speeds at different mph.
change the oil and filter not evertime the manuafacturer tell you , check your dipstick often for dark oil color. when dark change oil and filter
yes keep your air psi a little over what your tires and load rating require
heres some things that will make huge difference also:
make sure your cooling system is in perfect running order. if the engine overheats even a little it will get sluggish and use more gas
so check coolant levels
make sure spark plugs are in good shape and not corroded
same with plug wire ends make sure not corroded
make sure timing in dead on ( this can make a huge difference)
make sure driveshafts and their ujoints are not bent or worn out
make sure compression on engine is close to new ( huge difference)
keeping your vehicle as low to the ground as possible
taller tires, not big fat tires that add weight to the vehicle
stiff shocks , make sure the car is not waisting being propelled into the air instead of foreward
alignment can help a little
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