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Hey all, 

thinking about moving on up to 2500hd, needed for towing our travel trailer gvwr #8850.

Curious as what you are getting for mpg on 2500 6.0L engines.  City & highway, with and without trailer.

Currently have a 14 gmc 1500, getting 16+ city, 21+ highway, backroads at 57 mpr 24+, towing trailer 6-10 mpg.

Thank You,

James

 

 

 

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Thanks shakenfake, must be 6.6L instead of 6.0L

Buying used, love to have 6.6L Diesel, just waaay beyond what I can afford.

 

Funny Tim, but true.  Like riding my Harley for mpg.

Just courious what people are getting for mpg in a 2500hd.

Edited by James Beyer
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2 hours ago, James Beyer said:

Thanks shakenfake, must be 6.6L instead of 6.0L

Buying used, love to have 6.6L Diesel, just waaay beyond what I can afford.

 

Funny Tim, but true.  Like riding my Harley for mpg.

Just courious what people are getting for mpg in a 2500hd.

 

 

Well, you are in the 2015-2019 HD section so yes, the 6.0 would be the gas option those years.  

 

2020+up new body HD have the 6.6 gas.  

 

2015-2019 6.0 gas figure average per tank empty driving around 13-15mpg.  Towing 7-9mpg.

 

2020+up 6.6 gas figure 14-16mpg empty, 7-10mpg towing.  

Edited by newdude
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2 hours ago, newdude said:

 

 

Well, you are in the 2015-2019 HD section so yes, the 6.0 would be the gas option those years.  

 

2020+up new body HD have the 6.6 gas.  

 

2015-2019 6.0 gas figure average per tank empty driving around 13-15mpg.  Towing 7-9mpg.

 

2020+up 6.6 gas figure 14-16mpg empty, 7-10mpg towing.  

Damn I don't think I have ever seen a 15-19 gas 6.0 haha I thought that the 6.6 started in K2XX or did they just get rid of the 6.0 for the T1XX?

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2 hours ago, shakenfake said:

Damn I don't think I have ever seen a 15-19 gas 6.0 haha I thought that the 6.6 started in K2XX or did they just get rid of the 6.0 for the T1XX?

 

 

6.6 L8T gas was new for 2020 T1 HD.  The 6.0 from 15-19 (technically 2010-2019) was the last new variant of the 6.0, the L96.  L96 is basically the same as the LY6 before it (07-09) just with the addition of Flex Fuel capability.  

 

6.0 was Gen 4 small block, LS family.  The new 6.6 is Gen V small block, LT family.  

 

6.0 was 360hp @5400rpm, 380tq @4200rpm.

 

6.6 gas is 401hp @5200rpm, 464tq @4000rpm.  

 

As far as differences aside from the fact they are both different engine families, the 6.6 gas is direct injected, 6.0 was multiport indirect.  As far as similarities, both were engineered and tested for truck use, both have VVT, and both don't use AFM.  

Edited by newdude
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Thank you gearheadesw, everyone.

the 2500 is diffently a work truck, lots of power, but not good mpg.  The same mpg back in 2000.

Figured by now 2021, the big three would have figured out how to get 30+ mpg with these trucks, oh well.

I just pull the camper around 10+ times per year, and not to far so...

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