I rolled across the scales at the wreckers with our 22 foot float weighing 17,500 LBS total weight... cranking down the highway at 100 km.... thats why i have the 1 ton springs. hah

Heaviest pull ever. Going in the truck pulls this spring , should be fun

But weekly i have a car/truck behind my truck

 

Oh wow. I'm really surprised your axles can take that. The springs are important, but there is a reason 3/4 and 1 ton trucks have full floating axles!!

 

I live in a highway area. I normally get 300 miles with the gauge in 1/4 tank. It varies as to weather conditions and temp. But usually in the ball park of 20 mpg's

 

How many gallons do you fill up with? I only ask cause my gauge does not follow a linear path.

 

I think its a 20 or 22 gallon tank. A 1/4 tank for me is within 15 gallon to fill.

 

Lol, thats my point. My gauge is so erratic that the needle could be on the 1/4 mark and the tank have anywhere from 5-7 gallons left in it! That makes a huge difference in calculating gas milage. The only way to calculate it accurately is down to the decimal for what you put in and how many miles you've driven.

You can't just say 1/4 tank is 15.5 gallons to fill so 300/15.5 = 19.4 mpg. Because in reality there could be 16.5 gallons to fill and the needle still be on the 1/4 mark and that just brought you down to 18.2 mpg.

And its a 22 gallon tank.

 

Thats what I was meaning. When my gauge sits at 1/4 it takes about 15 gallons to fill it. And I have about 5-7 gallons left at 1/4. And I usually get 300 miles from fill to 1/4 tank.

I corrected a few things on the truck so lets see if it gets any better. I'd love to reach over 22mpg average.

 

I got 22 mpg when I went to The Outer Banks. I tuned up the truck, had the local dealer power flush the transmission and run a BG 44k fuel system maintenance on it. Smoothest idle the truck had in several years.

It was fun going up those mountains with a loaded bed and passing people at 75 mph that were struggling to do 50 mph.

Did I mention the truck had 180k miles on it at the time?

 

As most of you know ive got a 1987 2wd Dakota with the 3.9 and 3 speed auto got around 130,000 miles on it now
I average around 12MPG's in town and around 18MPG's on the highway, though i personally think it should be better even though mine only has the 3 speed, i also think my O2 senser is bad

 

If you're getting more than 18 mpg on the highway, you're either riding a tailwind tornado or your math skills really suck. My 93 5.2-L V-8 with auto tranny and 4WD gets 15-17 on the highway at 55 mph and a whopping 12 mpg up around 70-75 mph. In town, I'm lucky to get 11 mpg. It's pushing 189K miles, still runs good, but better mpg isn't attainable given the engineering/design. The only way to get an accurate mpg reading is to fill up, reset your trip odometer, run it a given distance or until the fuel light comes on, fill up again and divide the miles traveled by the gallons pumped/used.