Fuel Usage from Stop to 60mph?

It's pretty minor amount. You can be at cruise in about a minute or a little less if you have the horses. Your hourly fuel burn can be as much as 30 gallons or more. So a minute getting to speed is not that material.

What DOES make a impact is progressive shifting on RPM's like a staircase. You WILL walk away from another using older form of winding out engine with each gear and be at 60 much faster than he is.

I don't think it's one or two miles. In racing with ungoverned bobtails I was at 100+ in about 1/3 of a mile beating stock V8 cars from the 80's and so on in those days. Now if you were caught by the Law Racing Commercial Vehicle on public roadways you can pretty much assure your license will be nuked for a long time. Loaded 18 wheelers will get to 60 when they get there, not before.

Some trucks under extreme unsafe loading situations will never reach 60. It will break first and try to hurt you, kill you or someone else or several someones with you on the highway.

The more horses you have available to you, the less fuel you will burn per hour to do the same work.

However whatever technologies that were created to give truckers 50 miles to the gallon etc were systematically eliminated from our ability to have them probably by the same interests intent on making sure you will go through a certain amount of fuel per day. I remember wife and I as a team we needed 300+ gallons every 24 to 30 hours. But we ran 1600 miles and only fueled once or twice at most crossing the USA so... there is that. Some trucks carry more fuel so they can literally pick the cheapest fuel in the USA and fuel there. It works out well for some.

 

Learn what BTUs and horse power are, then you can calculate the amount of energy used to move the truck and then using that, you can calculate how much fuel is used.

It should be somewhere around a eighth to a quarter of a gallon for an older truck, newer ones are less.

 

Into a 180 mph headwind, while climbing a hill, maybe.