How to get the best MPG

Don't use full throttle to accelerate only use what you need I use about 30%empty and 50 to 70 loaded I don't hammer down up every hill either

 

A bigger turbo and bigger exhaust tubes.
Isn't bigger always better?

Many years ago there was a test done to determine how acceleration affected fuel economy.
It was found that full, or nearly full, throttle while accelerating yielded the best economy.
That was because of volumetric efficiency.
Getting up to speed faster uses less fuel that drawing it out over a longer period.

 

You might be right just what I have been told to do and with no intiment k owledge my self... Either way no matter how I run this truck 7.1 it is....
But you must admit engines are vastly different than they were "many years ago" and that study may not be accurate any longer
Food for thought

 

Engines may be different in some ways, but physics is still the same.

The same fact applies. If you can achieve a higher density in the fuel/air ratio more power is produced with less wasted fuel in the process.
The higher pressure during combustion burns more of the fuel.

It is less important with a turbo, but the concept is still valid.

Where the newer engines have the real advantage of over the older isn't, I think, in the engine itself.
It is the fuel and computer systems.
Maintaining the ideal fuel/air ratio (along with volumetric efficiency) in all operating conditions are probably the most important things in getting both the most power and best fuel economy.

That is why there have been such cool things as variable valve timing, and now even variable cylinder compression.

Back in the day there was even the stratified charge engine. I'm not sure if that tech is still being used today.
But I had a Honda CRX that got 52 MPG on the highway - back in the mid 80's! It used that type of engine.
No computers, no turbo, no fuel injection either.

If they could achieve 52 MPG using only a carburetor, even in a 2 seater, 30 YEARS ago...
Where have their heads been since?
Do you see anything close to that today, even with all the fancy computers and injection systems?
Even in a tiny 2 seater, unless it is a hybrid?

 

Ride the low RPM side of the highest gear you can get.

Keep it around 60 on the freeway.

Pull empty trailers exclusively.

Don't drive at all.

 

I mean... Just GRASP it.

52 miles per gallon!

With no fuel injection or computer control or variable valve timing, or running off batteries that you have to recharge.

 

Is it all about emissions?
We have to make cleaner burning engines?

But, doesn't burning more of the fuel in the combustion process also create less emissions - because there is less unburned fuel?

Would not an engine producing 52 MPG be creating less emissions than an engine producing 10 MPG?
(Everything else being equal, of course.)

Maybe I'm a bit slow about these things, but it seems to me that the auto industry has gone very far backwards from my Honda CRX days.

 

Convert that 9spd to a 13spd.

 

There are a few diesel cars that can get that aswell