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Thread: Cold Weather Fuel Milage

  1. #1
    Join Date
    Sep 2006
    Location
    Jacksonville, NC
    Posts
    3

    Default Cold Weather Fuel Milage

    I seem to be getting lower fuel milage during these cold months than I did back in the spring and summer. Why would that be? Is that just a characteristic of the diesel fuel? I've had my truck a little over a year now and was stock when I purchased it (also in the winter) I was getting 18 in the city. She just turned 160,000 and am extremly happy with it.
    2002 D-Max CC SB
    Hypertech Programmer
    PPE Boost Increase Valve
    MBRP 4" Exhaust
    K&N Intake
    BD Power Exhaust Manifold
    Auto Meter Boost, Pyro, Trans Guages

  2. #2
    Join Date
    May 2001
    Location
    Ellington, CT, USA
    Posts
    208

    Default

    I have observed the same drop-off in MPG every winter. Other members here have advised that winter mix (#1 diesel) has significantly less energy than the normal #2.

    Plus taking longer to warm up, idling in the driveway, etc, etc.
    '97 'Burb K1500 6.5td 213k miles 3.42's Amsoil air filter & 15W40. All synthetic lubes. KD 3.5" exhaust. Clean cat. 16.5 - 17 MPG combined, 18+ hwy at 70. Love her, but never know what's next. Chevy should be paying us.

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