Mardo replied to Mardo's topic in 6.6L Duramax Diesel & Allison Powertrain (L5P/MGM)Which do you use, utimate connection or raised ultimate connection? I'm ready to order but want to make sure I get the right one. I will have a 2021 GMC 2500HD with fifthwheel/gooseneck package.
I disagree, I love the tailgate. I've always driven a Ford F150 and decided to try an AT4. One of the things I like the best is the tailgate. If I'm hauling dogfood or anything in the bed it makes it so much easier to unload it by dropping the top part of the tailgate. I drive 45 minutes to get to my deer hunting woods and then I drop the tailgate and then drop the top part of the tailgate and use it to sit on and change into my deer hunting clothes and can stand up on the tailgate step without standing on the ground in my socks.
Mardo posted a topic in 6.6L Duramax Diesel & Allison Powertrain (L5P/MGM)What fifth wheel hitch are you using in a 2500 standard bed
Mardo replied to Mardo's topic in 6.6L Duramax Diesel & Allison Powertrain (L5P/MGM)Thanks
Mardo posted a topic in 6.6L Duramax Diesel & Allison Powertrain (L5P/MGM)Just wondering what your payload capacity on your sticker inside door of 2021 2500 AT4s w/ diesel says.
I’m in Arkansas
I'm in Arkansas and our local Walmart has 93 octane with no ethanol for around 50 cents more than 87 octane with ethanol. I figure I get 2-3 mpg more with the 93 without ethanol. It may not be worth it mpg wise but it sure seems to run better on 93 without ethanol. I have an AT4 with 6.2.
I’ve had no problems and I have around 3,000 miles on my AT4. I have 6.2, 20” wheels, and cat back performance exhaust. I love the power, the ride, and the sound. I get a lot of compliments on the way it looks.
I also have a bedcover, I think that helps some on MPG. I think the no ethanol helps too.
I have an AT4 with 6.2 and my MPG went way up when I started using 93 octane with no ethanol from Walmart. I also have the factory cat back exhaust.
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