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Buick LeSabre: Real World MPG

19 messages,  Last post on Dec 12, 2008 at 7:14 PM

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What is this discussion about? Buick LeSabre, Fuel Efficiency (MPG), Sedan

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#13 of 19 by andreasewa Sep 09, 2008 (8:44 pm)
I have a 92 Lesabre with the 3800 series (before the series II with the coolant problem), with 155k+ mi on the odometer.   I get at least 20mpg around town, and 28 - 30 mpg highway. (30mpg was the most ever doing 75mph on I-84 between Pendleton, OR and Portland, OR.) Who says you have to have a brand new subcompact to get decent gas mileage?   Oh, and with a tranny cooler and brake controller I can tow 3000 lbs, too.   Maintenance is pretty much just oil changes, tranny fluid changes and brakes.   I had to replace the driver side seat belt latch and the power antenna recently. Both were cheap at a u-pull-it. My A/C compressor went out last year, but with the help of a local A/C tech I am able to fix the A/C and convert it to R134a for less than $200.
#14 of 19 premium by jmac251990 Sep 15, 2008 (10:43 am)
can i run premium gas in my engine without it causing any trouble, I'm guessing i can cause all the octane rating is, is resistance to pre ignition so i dont think it should damage it
#15 of 19 by partsman Sep 18, 2008 (9:26 am)
2001 Lesabre 19 in town 34 w/cruise on freeway, 0-40 mobile 1 oil. tires inflated to max on tire
#16 of 19 03 Gas mileage by 01taurussel Dec 10, 2008 (6:21 pm)
Hi folks new to the board,   I don't drive fast, or crazy and I only get 20mpg on a 17 mile commute to work (one way). I am not pleased at all with 20mpg, and got 19 on my previous tank. Car only has 58k, new a new air filter and tires are ok. I know it takes a couple miles for the engine to warm up in 9 or even 25 degree weather. The OD takes a couple miles to shift into OD just like my 01 Taurus did - that happens on cars.   Does anybody else have this problem in the winter? Please advise! Replies to this message: tkcolorado (Dec 12, 2008 7:03 am) imidazol97 (Dec 12, 2008 1:26 pm) 01taurussel (Dec 12, 2008 7:14 pm)
#17 of 19 Re: 03 Gas mileage [01taurussel] by tkcolorado Dec 12, 2008 (7:03 am)
Replying to: 01taurussel (Dec 10, 2008 6:21 pm) What kind of road conditions (wet, icy, snow packed, dry)? What kind of traffic (stop and go, slow and go, or just go)? Does your state add ethanol to the gas during the colder months? What do you consider "not crazy" or "fast"?
#18 of 19 Re: 03 Gas mileage [01taurussel] by imidazol97 Dec 12, 2008 (1:26 pm)
Replying to: 01taurussel (Dec 10, 2008 6:21 pm) Is this a commute with stoplights every quarter mile and stop and go traffic? Or is it a commute with 45 mph on the expressway.   In short trip driving of a couple miles on errands with few stoplights our car tends toward 22 -24.5 mpg. We drive gently. The car is parked in a warm garage for cold starting.   If your car is outside at 10 degrees, it takes a long time for the transmission to warm up. I can see the mileage go up on our car for the first 10 miles on a cold day when I get on the interstate for a longer drive.   Try a different brand of gasoline to try to minimize the alcohol you're buying.   And different tires have different rolling resistance. Keep them 2-3 pounds above the recommended which is probably 30 psi. Remember to recheck them after the temps drop; tires at 50 deg. have 4 more psi than tires at 10 degrees. Check the tires cold.   If your commute is like the first I described, you may be doing okay. Replies to this message: 01taurussel (Dec 12, 2008 7:14 pm)
#19 of 19 Re: 03 Gas mileage [imidazol97] by 01taurussel Dec 12, 2008 (7:14 pm)
Replying to: imidazol97 (Dec 12, 2008 1:26 pm) Yes, we add ethanol to our gas (10%). Most of the driving is in dry, non snow packed highway driving at 60-65mph. I keep my tires inflated above 32psi, and just put in a new air filter within the last 500 miles.   I never have had a car that gets mileage this low in the winter (ie Taurus 24v, Ford 500, etc)..........Could an O2 sensor be dying?

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