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
Jayco23FB wrote:Sjm9911 wrote:
Im going to go here again, you can look up previous posts. 9 to 14 towing depending on speed and terrain. Around 13 at say 60 mph, 65 to 75 will be 10 to 12 or a bit more. I usally will go faster. I think I got 13 avrage to disney from nj at like 65 mph. 13 to 16 not towing on the same principle. I get 15 ish at 65-70. And 14 to 13 at say 80. I have 26000 miles on my 2020 2500 double cab? With reguler bed lt 4x4. Half of that or more towing. TT is about the same weight. I do load up the bed with lots of junk and use the bed outlet while towing. Pros, bigger gas tank, less stops. Trips that I had to stop 3 times for fule with the 1500 can be made on one fill up. This is because larger fule capacity and a little better fuel economy on the newer truck. Not much difference in towing vs not towing with a 5500 lb TT. Maybe 1 to 2 mpg less.
Duramax?
6.6 gasoline single rear axel.
