11 mpg?
Junior Member
Joined: Mar 2001
Posts: 1
Likes: 0
From: Tennessee
I noticed that a lot of you with complaints consistantly run low gears... mostly 3:55's and 3:73's. These gears cause your engines to operate at higher rpm's, and thus more fuel is burned. If you absolutely need better mileage, switch them out for some 3:20's or even lower. Also keep in mind, this is an American small block in a 6,000 lb. truck, not some Honda Civic 4-banger. The only thing they're good enough for is speed bumps.
Craig- '98 F-150 Lariat, 5.4 4x4; Stock aspiration, 3.55 LS, chrome Smittybilt Brush guard & roll bar, 4 Eagle Eye 100W lights, 2-55W Piaa lights, gts light covers, tinted windows, 17-in wheels & towing package... make me an offer! 6-disc Changer, Trumpet horns, Dual Captain's chairs, LEATHER!! I love my truck!!
Craig- '98 F-150 Lariat, 5.4 4x4; Stock aspiration, 3.55 LS, chrome Smittybilt Brush guard & roll bar, 4 Eagle Eye 100W lights, 2-55W Piaa lights, gts light covers, tinted windows, 17-in wheels & towing package... make me an offer! 6-disc Changer, Trumpet horns, Dual Captain's chairs, LEATHER!! I love my truck!!
Thread Starter
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Member
Joined: Jan 2001
Posts: 88
Likes: 0
From: Phoenix,AZ
hey guys, currently i have 2063 on my odometer and so far i have consumed exactly 118.2 gallons. that's 17.4 MPG! this might be due to my tires being 275/60/17 when stock, it came with 235/70/16. I keep a log of mileage and amount of fuel put in. this was all city driving plus leadfootitis. i hope it stays this way, considering Supreme unleaded cost 1.69 around here. LOL. 
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2000 EXPEDITION 4.6 3.31 Rear, AIRAID Fipk with Poweraid Spacer, UltraFlow muffler, 82 mm Mass Air Flow Sensor housing w/ stock sensor, 6.8 inch TV with tuner/VCP, Full alarm and Auto-Start, Daytime Running Lights
New Addition:
2001 F150 SUPERCAB 5.4L 3.55 LS, Airaid FIPK, 82 mm MAF sensor billet aluminum housing w/ stock sensor, Full alarm and auto-start, 50 series 3 chamber 3inch in/out Deltaflow Flowmaster
Swept Side style, Beltech 2 inch rear shackles, SUPERCHIP, billet grille, Lariat wheels and tires (275/60/17), Billet antenna by TRENDZ.
COMING SOON:
pulleys, remove cats, 2 inch drop all around.
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2000 EXPEDITION 4.6 3.31 Rear, AIRAID Fipk with Poweraid Spacer, UltraFlow muffler, 82 mm Mass Air Flow Sensor housing w/ stock sensor, 6.8 inch TV with tuner/VCP, Full alarm and Auto-Start, Daytime Running Lights
New Addition:
2001 F150 SUPERCAB 5.4L 3.55 LS, Airaid FIPK, 82 mm MAF sensor billet aluminum housing w/ stock sensor, Full alarm and auto-start, 50 series 3 chamber 3inch in/out Deltaflow Flowmaster
Swept Side style, Beltech 2 inch rear shackles, SUPERCHIP, billet grille, Lariat wheels and tires (275/60/17), Billet antenna by TRENDZ.
COMING SOON:
pulleys, remove cats, 2 inch drop all around.
Senior Member
Joined: Sep 2000
Posts: 425
Likes: 0
From: Denver, CO
Just turned 4000 miles on 5.4 FQR, latest tank was 15.5 mpg all city & country roads. I'm not easy on it either. Mileage has steadily climbed on the FQR from 12 to 15.5 mpg. Guess I should be happy, but I expect even better mileage after they get rid of the winter MTBE fuel.
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firstimeFord
99 SC 4x4 5.4 3.73LS
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firstimeFord
99 SC 4x4 5.4 3.73LS
