How to get the best gas mileage?

Discussion in 'General Motoring' started by Joey, Jul 15, 2004.

  1. Joey

    Joey Guest

    I'm driving from Orlando to New York City and back in early August.
    I'm planning on attaching a magnetic fuel saver to the incoming fuel
    line, hopefully getting 5 mpg more on the highway.

    What else should I do to save gas and money for this trip? I own a 99
    Saturn SL1 with 54,000 miles. Please recommend brands for
    additives/cleaners. Thanks!

    -Joey
     
    Joey, Jul 15, 2004
    #1
  2. Joey

    Elector Guest

    Return the "fuel saver" there is $10 right there. You also don't need
    any type of gas additive if you use a high detergent gasoline which
    most if not all have in use today.

    While you are up here get a copy of Consumer Reports and read up on
    those so called "fuel savers" it will save you a load of money by
    reading the magazine.

    Elector

    PS. I also own a 99 SL1 with 54,000 miles on it and it runs like a
    top.
     
    Elector, Jul 15, 2004
    #2
  3. Joey

    tholen Guest

    (1) Get a refund on the magnetic fuel saver.

    (2) Keep your speed down. My own experiments revealed a decrease in
    gas mileage of 2.5 mpg for every 5.0 mph increase in speed.

    (3) Routinely check for proper tire inflation.

    (4) Some time ago, I would have also recommended driving more at
    night so that you could limit use of the air conditioner,
    assuming you have one. Nowadays, it's not immediately
    obvious that the load produced by the air conditioner is
    significantly higher than the load produced by the headlights.
     
    tholen, Jul 15, 2004
    #3
  4. Joey

    Ron Herfurth Guest

    Changes the plugs
    Change the wires if you haven't already
    Change the gas filter
    Change the air filter
    Change the oil and filter if it's anywhere near due (won't help with gas
    mileage but an oil change will probably be overdue after a round trip from
    Orlando to NYC)
    Change the transmission fluid and filter (that might not help much with gas
    mileage either but I think it's recommended around 50,000 miles)
    Ditto on flushing the radiator - it's hot up here.

    ron
    94 SL-1 108,000 miles
    ~ 35 mpg highway
     
    Ron Herfurth, Jul 15, 2004
    #4
  5. Joey

    Ron Herfurth Guest

    A 4-wheel alignment wouldn't hurt.
    Consider getting them all spin balanced if they're in good shape, considered
    new tires if they're getting old.


    Running the AC fan at the lowest speed you can stand will save gas but
    probably not enough to notice.

    ron
     
    Ron Herfurth, Jul 15, 2004
    #5
  6. Joey

    Lane Guest

    (2) Keep your speed down. My own experiments revealed a decrease in
    The DOHC motor does have a sweet spot though. The best mileage my '94 SC2
    can achieve is when I can stay a steady speed between 80 and 85 mph. I've
    driven an entire tank at this constant speed on the highway without stopping
    or slowing down much and got between 36 and 40 mpg. This was with the air
    conditioning on also. I was pretty darn surprised because this goes against
    conventional wisdom - but hey, it's a Saturn and it's a little different
    anyway.

    Lane [ l a n e @ p a i r . c o m ]
     
    Lane, Jul 16, 2004
    #6
  7. A couple of tips:

    1. use balding tires (less rubber flexing so less rolling resistance)
    2. over-inflate your tires (I use 32 PSI cold)
    3. use lighter synthetic oil (5W...)
    4. try a can of magic mystery oil in your gas
    5. put a block of wood under your gas pedal to limit travel and drive
    around in an empty parking lot. Get used to using no more than 1/3 of
    pedal travel (ie. don't acclerate hard). Take out the wood before
    going back on road.
    6. limit top speed to 55MPH.
    7. coast well before coming to stop. Every time you use brake, you
    are burning money.
    8. drive on highways where you maintain constant speed/pedal position.
    9. don't use AC. Keep all windows closed.
    10. shift early. I use 2000RPM as shift point.

    I got over 50MPG (imp gal) doing the above. The tires eventually wore
    out and I got replacement Michelin Hydro Edge (at lower PSI). Fuel
    consumption immediately dropped to 44MPG.
     
    Wilf (don't bother e-mailing me as I don't check t, Jul 18, 2004
    #7
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