Thread: 8.1 Allison?
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Old 01-21-2006, 06:22 PM   #9
Montana Sky
Montana Master
 
Join Date: Jan 2004
Location: Down the Road
Posts: 5,627
M.O.C. #889
Well Dave,
If your mileage on the 03 trucks you are using as an example is correct, I think the Duramax proves its value. An 8.1L w/28K miles and a Duramax w/ 103K for roughly the same price. I think you see what I am thinking. When it comes to cost of maintenance, I can tell you oil changes run me approx. $50 b/c of the 10quarts of oil and filter. Might be easiest to take a trip to your local GM dealership and talk with the service guys. Ask them for a maintenance plan for both the gas and diesel motor. If memory is right the Allison and diffs are on the same schedule for both trucks, so the higher cost of oil changes is going to be your biggest cost difference, of course as well as MPG towing and empty.
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