Hey guys I have a 2004 Duramax LLY Chevy 2500HD. This is my first diesel and I got it about 3 months ago. I am trying to learn as much as I can about diesels as I am fairly new to them, but I absolutely love mine. One question I have is whether or not my fuel economy is not quite right or not I have a 8 inch Fabtech lift on my truck and 37" BFG's on it as well as an Edge A2 programmer. I am averaging about 13.5MPG as of now. A lot of my daily mileage is on the interstate as I have a 30 minute drive to work everyday with most of that on the Interstate. I live in Virginia and it has been a pretty cold winter so I am trying to figure out if between the lift and the cold that should be about right or not. I do keep it plugged up everynight and make sure to start it and warm it up before I leave anywhere. I am trying to see if this is about what I should be getting or if I should worry about possible injectors going bad or maybe a fuel filter that should be replaced even though there havent been problems with the LLY engine. Any feedback that could be helpful?

 

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A big lift and large tires is the fastest way to ruin fuel economy. I'd say 13-16mpg is right in the range.

 

yes thats a huge lift, and also your probably getting the winter blend of diesel so ur economy does go down a bit.

Welcome to DB

 

Welcome to DB.

 

 

 

 

Welcome to db

 

Welcome to the site.