There hasn't really been a brand of semi trucks recognized as the most fuel efficient. Since they run on diesel a more efficient fuel, semi trucks already are more fuel efficient than cars in terms of size and power.
According to my research the 2011 Dodge Ram 1500 Pickup 2W appears to be one of the best fuel efficient trucks that has come out this year, based on an article in Popular Mechanics.
No, it will not.
In the United States the most fuel efficient pickup truck is the Ford Ranger with a 4 cylinder engine.
Freightliner is brand of medium and heavy duty semi-truck tractors. The 4 major brands are Peterbuilt, Kenworth, Volvo, and Freightliner. Freightline is best known for there Century Class model which caters to the large companies that are looking for inexpensive as well as fuel economy, where Peterbuilt and Kenworth have been more for the independent operators who look more for driver comfort and engine power.
It comes with whatever sized tanks the orignal purchaser ordered it with.
Because diesel is efficient fuel which decreases the stroke
An aerodynamic cab one, like a Freightliner Cascadia, International ProStar or Volvo VN680.
Isuzu is a fuel efficient truck, depending upon the model you buy. Today, you can probably find a hybrid model, which will really save on the cost of fuel.
Most stations - no matter the brand - are typically independently owned. Station owners order gasoline from whichever distributor they want and the delivering truck adds the specific additives for that brand. The gas that comes out of the pipeline is the same no matter the brand.
Depends on how fuel efficient it is, and how far its driven.
Check your suction lines and pickup tube on the tanks.
The most fuel efficient GMC Truck you can get it the GMC Banarge, it can come with a small 1.8ltr Diesel Engine offering upto 25Mpg, tho this truck is rather slow it can be great for starter businesses to save on fuel costs