GMT K2xx Trucks General Discussion 2014+ Trucks | General Discussion

Winter Gas

Old Feb 12, 2021 | 03:08 PM
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Default Winter Gas

Seems that our Gen 5 trucks are especially sensitive to the cold weather; past winters I've noticed a drop in mileage but would improve as the weather warmed up, even one day to the next and it was real easy to bounce back to the regular 19.2. But this winter seems to be different I'm off by about 3.6 mpg and it tough to get back to the standard 19.2. Anyone else have similar experiences..........
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Old Feb 12, 2021 | 03:27 PM
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I have definitely noticed a difference in mileage per tank. I try not to rely on the dash calculation just go off how many miles I get per tank. I attributed it mostly to remote start and letting it idle 10+ min to warm up the inside before work pretty much every morning.
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Old Feb 12, 2021 | 05:51 PM
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Originally Posted by tjmath
I have definitely noticed a difference in mileage per tank. I try not to rely on the dash calculation just go off how many miles I get per tank. I attributed it mostly to remote start and letting it idle 10+ min to warm up the inside before work pretty much every morning.
The warm up time will kill your gas mileage. Newer hybrids they tell you just to start and drive, i assume that's to keep MPGs up
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Old Feb 12, 2021 | 05:52 PM
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My econ went from 15-17 down to 11-12






but I also lost overdrive in the 4L60 😂
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Old Feb 13, 2021 | 11:20 AM
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Originally Posted by wretched73
The warm up time will kill your gas mileage. Newer hybrids they tell you just to start and drive, i assume that's to keep MPGs up

Actual range is reduced, confirmed by dash readout. I've stopped the auto start warmup and that's helped a bit. Wondering if they're oxygenating the gas really good this season..........

Last edited by Mark Johnson; Feb 15, 2021 at 03:57 PM.
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Old Feb 13, 2021 | 12:35 PM
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I'm getting 7mpg, lots of remote starts and being -10 to -20+ at night makes for poor mileage.
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Old Feb 13, 2021 | 12:59 PM
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Colder air also burns more fuel, and makes more power.
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Old Feb 13, 2021 | 03:06 PM
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Originally Posted by FFDP
I'm getting 7mpg, lots of remote starts and being -10 to -20+ at night makes for poor mileage.
Good Lord -20? Everybody is flipping out around here because its getting to 0 Sunday or Monday night. Business is good though.
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Old Feb 13, 2021 | 03:39 PM
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It ain’t supposed to be 0 in central Texas.
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Old Feb 13, 2021 | 05:16 PM
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I'm not even that close to Canada, that's still 5-6 hours north and it's that cold. Been a over a week straight of well below zero, didn't even hit zero degrees today.

Sunday into monday will be -20 to -25 degrees where I am. Windchill around -40.

Ely, Minnesota hit -50 this morning.
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