Aero on a "sled" - Fuelly Forums

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Old 05-19-2008, 11:31 AM   #1
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Cool Aero on a "sled"

I own a 2000 Buick LeSabre.

On the Highway, with 140,000 miles it is still getting 28 mpg.

What are the standard tricks to help with gaining all the mpg I can?

I drive 120 miles/day.

Thanks for a great forum.
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Old 05-19-2008, 01:10 PM   #2
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Air up the tires to MAX psi, use synthetic in the WHOLE powertrain and use the best fuel you can. I perfer QT. 87 octane gets 1 to 1.5mpg better than cheap Conoco 89 Octane that's the same price. Also tune it up. Change plugs, wires, distributor (if there is one), air and fuel filter. Also check the O2 sensor, alot of guys on here highly recommend changing them. Outside of that check the other forums for mods you're interested in. Just depends on the time, money and dignity you're willing to sacrifice for better mileage.
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Old 05-19-2008, 01:14 PM   #3
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Mods are nice, but driving strategies are what really bring up your MPG. I think I'll put together a "Getting Started" canned post for all the folks who post introductions like this...
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Old 05-19-2008, 01:47 PM   #4
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check out my garage: 1995 olds 88(retired), similar to your buick.

before i got rid of it, it was avg 28mpg combined. pre OBDII, so i couldn't get a hwy only avg. judging from the terrible city FE, my guess would be 35+ hwy.

amsoil, overinflated tires, grill block, and driving techniques got it done.

note: i had good results using acetone, but that was before the cursed ethanol came along .
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Old 05-19-2008, 02:16 PM   #5
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120K do an Auto-Rx cleaning on the engine to start. As previous advice suggested I would run do a fluid exchange in transmission and fill with Mobil One or Redline. Also run a good oil and you can get away with extended oil changes.

Auto-Rx is a metal cleaner not a flush. Most people are getting a bump of 1 to 3 mpg after a cleaning of the engine. A internally clean engine is an efficient engine. Also run a good fuel system cleaner once or twice a year to keep it clean along with the injectors.

Auto-Rx.
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