GM Mileage 6.6 gas & Diesel
Looking to get real world towing fuel mileages while towing a 6,000lb travel trailer. I would love to hear from anyone towing that size trailer with a late model GM 6.6 gas or 6.6 diesel as well any c...
Forum Discussion
At the sane speed and at the same weight (loaded for camping) a travel trailer exerts a 40-50% penalty at approx 60-mph. Size & Weight don’t mean much compared to the aerodynamic problem.
1972 or 2022 changes nothing.
If the tow vehicle (with scaled weights) over the same road course at the same speed gets 16-mpg solo, it’ll see 7.8-9.6/mpg while towing. (Take that to the bank).
An aero TT with details worked will stay under 40%. A box TT (slides, etc) with typically sloppy hitch rigging can (will) exceed 50%.
If it matters then SAFETY LONGEVITY RELIABILITY ECONOMY will be given the attention they deserve. They track together 90% of the way.
.
.
1972 or 2022 changes nothing.
If the tow vehicle (with scaled weights) over the same road course at the same speed gets 16-mpg solo, it’ll see 7.8-9.6/mpg while towing. (Take that to the bank).
An aero TT with details worked will stay under 40%. A box TT (slides, etc) with typically sloppy hitch rigging can (will) exceed 50%.
If it matters then SAFETY LONGEVITY RELIABILITY ECONOMY will be given the attention they deserve. They track together 90% of the way.
.
.
