How accurate are the gallons in fuel tanks ?

You’ll get better fuel mileage if you drive like there’s an eggshell under your pedal and build up momentum on downgrades so you don’t have to step on it on small upgrades.

 

The light comes on differently based on how level the truck is, both nose up/down and roll left/right. You really ought to run the experiment yourself and prove to yourself what YOUR truck will do. Whatever answer you get online you aren't likely to fuel to the same level as the guy giving you his info. On my truck I have a Trip Counter and a Leg Counter. Each counter tracks miles and gallons used since last reset. I religiously use the counters and reset them when I fuel. My fuel gauge will show 1/4 tank remaining when it's actually half empty. On my truck, I have no problem driving 100 miles AFTER the "low fuel" light comes on. I sometimes consume 120-130 gallons of my 140 gallon capacity. You need to know your truck.

 

I had a pair of tanks totaling 345 gallons volume. However it's only able to get to 335 usable gallons.

DO NOT run your tanks down that much in winter. Always go fill them at half tanks. Its a defense against getting stuck and having to wait a while. Being able to wait in a warm truck at -40 is defense against death. (For a while anyway...)

I am taught the differences between volume inside tank and actual fuel capacity that you can get to is allowing for expansion in hot temperatures, be it the fuel coming back from the engine or in really tough and extreme hot conditions where the pavement is approaching 200 degrees.

 

The data printed/engraved on my tanks show the physical capacity of the fuel tank and the 95% capacity of the tank. Most cylinder saddle tanks I've ever seen are installed so the filler neck is turned to prevent filling the tank to 100% capacity.

 

Measure the length and radius and put it into a volume calculator for cylinder

 

Change float

 

172.5 gal tanks. Sounds credible.

 

I’m sorry but I don’t see where he states fuel mileage. I see fuel prices