mpg

[THE BIGPUNN]

has anyone been able to figure the difference in mpg using 4*4 or auto-trac? curious, cause my mpg seems to be awfully crappy since having to use it.

[silverado man]

I wouldnt know because I havent been able to use it yet.  :sneek:  ???.  But I have heard that there has been a little difference.

[Shaners]

Even in 2wd your milage will get worse in the cold weather.  Every vehicle I've owned (truck/car/van) has dropped a few mpg's in the winter.

[RyanbabZ71]

last december 2 ft snow

 

autotrac and 4 hi all month truck never came out of 4wd

 

10.4 mpg

[colosilverado]

??? Well, I know it isn't what you are looking for, exactly, but my 5.3L ExtCab averaged 15.6 mpg on my trip of 375 miles, which included some autotrac driving. Actually, I drove up over Cameron pass to Walden, Colo. and up to Independence Mountain, where I had the truck in a mix of auto, and 4-high. There was about 8" of powder on the mountain, so I had it in auto/4wheel almost the whole time I was on there,which was over an hour, and was on the throttle to keep momentum and buck some drifts.

 

Anyway, the whole trip was:

 

From Loveland to Greeley to pick up the wife's grandpa, which is highway driving at 65mph, then from Greeley to Ft. Collins (mostly all above 65mph), and then from Ft. Collins, over Cameron Pass (10,200'+) to Cowdrey, and on up to the top of Independence Mountain, which goes up to 9500', or so. Mix in some in-town driving in the various towns we went through, and that is a pretty decent picture. Of course, I reversed the trip going back home, all on a little over 23 gallons.

 

I was pretty impressed, overall. Again, my truck is a '99 Ext.Cab 1500, with the 5.3L, and no mods other than a topper/shell. Passed the 20k mark on the way up the Poudre canyon to Walden.