2024 6.6 Duramax Fuel Mileage

2024

2024 6.6 Duramax Fuel Mileage. The engine has been updated with the latest fuel injection,. I have 12,000 mile on a 2022 3500 gmc duramax, 10 speed 3:42 dually rear end 4×4, terrible mileage.


2024 6.6 Duramax Fuel Mileage

6.4 towing 8,000# ball tow rv. I recently traded in my 23 at4x 1500 for my current 24 at4x hd with the 6.6 duramax.

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