Forum Discussion

Texas_Roadrunn1's avatar
Texas_Roadrunn1
Explorer
Jan 21, 2018

2016 Ford F-350 Crew Cab LWB Dually 6.7 Mileage

Our 6.7 liter truck mileage has dropped from the 14-16 mpg range on the highway to around 12-13 mpg when not towing. Truck has about 35,000 miles on it. We have seen mileage in town as low as 10.5 mpg...
Tow Vehicles
ppine's avatar
ppine
Explorer II
Jan 21, 2018
Something ain't right. Diesels need air flow in and air flow out. Check your fuel filter, exhaust system, and sensors.

I really like the AIRE air intake and have a 4 inch exhaust. With a simple tuner your mileage can be increased. It sounds like something else is going on that should be easy to find with a computer.

About Travel Trailer Group

44,025 PostsLatest Activity: Feb 06, 2025