6.0 fuel mileage?

[cvanderweyst]

I am in the market for a crew cab chevy and i found a pretty good deal on a 2006 chevrolet HD 6.0 1500. I am wondering how much worse the mileage will be with a 6.0 vs 5.3. He claims that because it is not a 3/4 ton it is a 1500 that the gearing is diffrent and the mileage will only be 2mpg. worse with the 6.0. Is this [PoorWordUsage]? What is a realistic minimum and max mpg?

[00rowe]

I've got a '05 3/4 ton with the 6.0 and have never been in the 16's, 15+ in the very best of conditions driving highway and not freeway speeds. I believe the 1/2 is the 3.73 and 3/4 is 4.10, that should help out mileage a little, but she'll be expensive to drive one, that's for sure.

Mike

[trolloni]

I have 3 differant friends that have them 10 to 12 they tell me .

[KatoMike]

The 1500 HD is 3/4 ton truck(check the GVWR - it is 8600 lbs. - anything over 8500 lbs. is considered a commercial duty vehicle; the 2500 HD has a GVWR of 9200 lbs). The frame, transmission, axles all are different from the light duty 1500's. It is a much more capable truck than a regular 1500.

I had a 6.0 in a 2500 Chevy - I got between 12 and 14 mpg. Fantastic engine, though.

[randerson]

I have had 2 of them at work and we dont get any better than 12mpg and even on a long run to FL it was only 14mpg

[buddha]

My dad had a 2006 GMC 1500 H.D with a 6.0 and the best he did was 12mph. He did town driving, hwy and hauled a trailer hunting a few weekends a year. He didn't use the truck to his potential enough cause it still got 12 no matter if you were hauling something behind or not. I loved the truck when we went on trips hauling the boat cause his truck would get better milage then my smaller 5.3. I have at 2010 GMC and it will get ave of 16(general) but as good as 18 to 21 on longer drives and hauling boat or stuff anywhere from 8 to 13 at best. I put on lots of miles with my truck but I would love to have the 6.0 if I didn't drive as much.

[PurpleFloyd]

Heck my Ram 1500 with the 5.9 only got 11-12 empty and 10 pulling a trailer so that isn't too bad. I do like the 6.0 engine too. lots of power and smooth.

[bigswede]

I have an '06 w/ 178K on it and I have USED it. I still get 12-14 depending on where and when.

[Outfitter17]

My 6.0 in my 2500hd gets at best 13.5 on the hwy, trailering around 9-10. I know lots of guys with 1/2 ton 5.3 and suburban 5.3 that get between 18-21 on the hwy, so the guy is full of [PoorWordUsage] telling you it's only 2mpg different. The 6.0 is a really strong engine, but not great on gas.

[WingDing2]

I have an 03 Silverado HD1500 w/6.0 120m and average is 11.2 around town 14 Hwy. Towing heavy loads (28ft Sportcraft) 10 mpg

@ 4 bucks a gallon get a 5.3 unless your buying a truck to tow something.

I have never had any serious problems with my 6.0 great engine!

[Biggestfish]

Guy at work has a 2500 crew with the 6.0, he likes the truck. He reports 10 to 12mpg.