Dr. Evil

Been a while since my last update. Truck now has 53k miles on it. Lifetime average is 19.6mpg. I tow our boat a lot in the summer. I've noticed it drop off with the winter blends as far as MPG but pick back up again in summer. Best 25mile trip so far is over 31mpg Best 50mile trip so far is over 27mpg Best 400mile trip is just over 24mpg.

Just to add more to the discussion. My truck now has over 40k miles and the lifetime average is 19.6mpg. I still have not reset trip B since buying it new. Some tanks I get 22mpg, others like last week towing the boat a lot I get 13mpg.

My truck had 250ish miles on it when I purchased it. I reset the #2 Trip/fuel economy at that time. I have over 12k miles now and have not reset it. My lifetime average according to the DIC is 19.2. My all time bests are posted above but they are pretty good too. FWIW, I tow a boat to/from the lake and made that trip 2 times this weekend which is very hilly and nets me about 9mpg on that trip. I had about 1500lbs in the truck bed last week, twice. My point is that I do use my truck on occasion and its not all hwy miles. Mostly, but not always. I do check the DIC against the actual numbers at the pump and they line up really well.

Thing is, I'm in the same area as him and get considerably better fuel economy. I routinely see 23-25 avg on my last 25 mi on the DIC. tnchevy, one other item that could be a difference maker is the wheels/tires combo. Mine has the standard 18s with the Goodyears.

TNCHEVY, I just replied to the other thread before I saw this reply. I usually get my gas at Weigels but that's just because its convenient. I have no preference. I did notice that at about 2k miles it started getting better and by 8k it was noticeably better. I keep my tires at 35-37PSI and don't hot foot it which helps I'm sure. I have noticed that if I drive 80mph on the interstate my fuel economy drops significantly. 65mph seems to be the sweet spot with a range of 55-65 being best overall. I don't drive that slow on the interstate, usually I'm a 70mph guy but occasionally I'll do 60-65 (in the right hand lane) just to see how high I can get the average. I had a 2008 CC Silverado with a highway gear and a 4.8. That thing was bad, just horrible to drive on anything other than flat. It would downshift if I hit a June bug. It didn't get particularly good fuel economy either. I just got back from the lake, pulling the boat with 5 people in the truck to/from so I'm at 13mpg for the last 25 right now.

2nd post as a member here 2014 Silverado 5.3 4wd ext cab best 25 avg so far has been 27.9 best 50 avg so far has been 25.1 best 400 avg so far has been 21.9 Truck had 250 miles on it when I bought it and I reset the B trip and have not reset it since owning it and it has averaged 19.2mpg since I purchased it. It currently shows right at about 12k miles. My commute is mostly hwy and I usually run 60-70mph so I'm sure that helps but I have been really impressed with the fuel economy thus far. I've noticed economy gets better with warmer weather and it really drops off above 70mph. I usually get 22mpg on my 40 mile (each way) commute and the last 25 it usually hits 25mpg avg on the DIC.