Is a truck fuel efficient?

Many truckers believe the Cascadia gets the best mpg. I hear truckers say they get about 7 mpg on the open road with...

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...

The most fuel effincient car is the Honda Hybrid. --- Hydrogen-fueled cars such as the Honda Clarity FCX and new H2 Mazda RX-8 don't even use gasoline/diesel. Volkswagen Lupo 3L uses 78 miles per US...

Hybrid cars like Civic hybrid and cars with DICOR like Indigo DICOR

Take off the gas cap, look for a schroder valve on the fuel rail. If it has none then wrap the filter connection in a rag and be prepared for a sudden spray of fuel when you loosen the filter.