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  1. #41

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    1998 K1500 ext cab 4.3 5spd stock 17.1 city driving Skip shifting staying below 2k

  2. #42
    Jr. Apprentice jgalantine's Avatar
    Join Date
    Jan 2008
    Location
    Jacksonville Florida
    Posts
    14

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    03 Silverado K1500 reg cab long bed - 4.8 4x4 - auto trans - OEM size tires - no mods at the moment.
    I run synthetic fluids in the crankcase, diffs, and transfer case. Stock fluid in the trans. 87 octane fuel.
    87k miles.
    50/50 I live in city, but take freeway everywhere.

    I just verified via 3 150+mile calculations that I am getting 15.9 mpg.

    I am planning fuel filter, tranny fluid (synth) and filter, CAI, catback, and diablo tuner in the next 3 months to improve HP and MPG. Will post results as they come in.
    Last edited by jgalantine; 05-02-2011 at 05:22 PM. Reason: updated make/model/trim
    2003 Silverado 1500 4x4
    Jax FL

  3. #43

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    2011 2500 hd crew cab 4X4 6.0 lit. 600km (275 miles)trip mostly hwy @ 110 kph (69 mph) got 14.4 lit/100km (16.4mpg US).
    5 in the truck and the back full of camping gear. Extang solid cover.
    Last edited by jake's silverado; 05-28-2011 at 08:22 PM.

  4. #44
    Newbie
    Join Date
    Jun 2011
    Location
    Kansas City, Missouri, United States
    Posts
    1

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    2001 Suburban 5.3 4X4 22" rims 12.5-13.5mpg
    Attached Thumbnails Attached Thumbnails suburban 6511.jpg  
    Attached Files Attached Files

  5. #45

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    Quote Originally Posted by jake's silverado View Post
    2011 2500 hd crew cab 4X4 6.0 lit. 600km (275 miles)trip mostly hwy @ 110 kph (69 mph) got 14.4 lit/100km (16.4mpg US).
    5 in the truck and the back full of camping gear. Extang solid cover.
    Did a trip this weekend with about 7200lbs worth of travel trailer and got 29 lit/100 km...

  6. #46

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    Truck: 2007 NBS Silverado 1500, Extended Cab 6' bed. 5.3l steel block (LY5, 'J' VIN) V8 with Active Fuel Management.
    Upgrades: Synthetic oils. Spray On Bedliner. 3/4 ton truck 10 ply tires. I keep as little weight in as possible and don't accelerate too hard, nor do I speed.
    MPG: 18.9 max, 17.5 avg, 13.1 min with 2/3 of the time on the interstate at 75mph. Calculated by miles driven divided by gallons pumped to a full tank. Most of the time I buy from Shell
    2007 Silverado 1500 NBS - Work truck and daily driver
    2002 Malibu - The wife's car, for now. I smell a Suburban in my future
    1976 Stingray - The only one in this list with less than 100,000 miles

  7. #47

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    Just filled up yesterday and made 26.9 mpg. This is down from the same period last year when I made 27.1 mpg. And this is my first tank on my newly reprogrammed (for economy) ECU. 95% rural driving and 5 % highway.

    07 Sierra Classic, 4.3 L. 5 spd. M/T
    Tires inflated to sidewall max. pressure, skip shifting from 3rd to 5th when practical,
    MSD Coil, under drive pulleys, headers, cat-back exhaust, Taylor plug wires, stock plugs, K&N FIPK, ScanGuageII, hypermiling driving techniques, Vararam TB insert, tonno cover. ECU tuned for economy.
    Last edited by Goldie; 06-15-2011 at 06:29 PM. Reason: Added more info.

  8. #48

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    2001 silverado 1500 standard cab shorted step side 4x4 z71 3" custom cat back. Flowmaster 40 series 3.5" tip. 15-17 mpg 60/40 city/highway if I stay out of it. 14-15 if I get after it even once or twice.

  9. #49

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    2002 GMC Savana 2500 5.7 3.73 4l80E stock work truck. I carry about 1000lbs. 8 city 11 highway

  10. #50

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    2011 silverado extended cab 4x4
    i get about 13 in the city and about 15 on the highway

    2011 Silverado (Ellie)
    Extended cab

    Upgrades:
    K&N Cold Air Intake
    Gibson Extreme Dual Exhaust
    Leveling Kit
    Warn Bull Guard
    Blackedout Bowties
    BF Goodrich All Terrains

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