Winter gas guzzling

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Feb 17, 2008 | 12:21 PM

#11

Yokel99

Thread Starter

Cruiser

Joined: Oct 2007

Posts: 176

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RE: Winter gas guzzling

We're back from the NV,AZ,NM tour and found an appreciable difference in gas mileage when the temps were close to freezing. expected mileage returned at 50 degrees or above.

Feb 17, 2008 | 12:34 PM

#12

Streetrunner

Stellar HDF Member

Joined: Dec 2005

Posts: 2,598

Likes: 52

From: South Jersey

RE: Winter gas guzzling

I get 38 mpg in summer. Last tank fill (yesterday) averaged 32mpg.

Feb 17, 2008 | 12:37 PM

#13

SoCal_Pappy

Elite HDF Member

Joined: Oct 2006

Posts: 4,602

Likes: 5

From: Southern California - Palm Springs Area

RE: Winter gas guzzling

WINTER FUEL MIX and COOLER AIR TEMP will reduce MPG

Feb 17, 2008 | 12:45 PM

#14

pirateheadman

Cruiser

Joined: Oct 2007

Posts: 198

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From: McDonough, GA

RE: Winter gas guzzling

SG summer: 46-48 mpg
SG winter: 40 mpg last tank. Same basic trips, commute, store, barhops on weekends. Ialways figured it was the cold air = more fuel thing.

Feb 17, 2008 | 02:57 PM

#15

choochoo

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Joined: Jan 2007

Posts: 2,301

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From:

RE: Winter gas guzzling

It's normal in those kind of low temps.
The engine temp sensor is telling the computer that
the engine isn't fully warmed up.
Plus the winter cold air is denser and the map sensor is telling the computer you are getting more air, so it adds more fuel.
so you are running a richer mix, kinda like leaving the choke part way on.
consequently the mileage suffers.