It's mayonnaise versus low-carbon fuel producers in the scramble for soybean oil. The Environmental Protection Agency last week issued ... When Mayonnaise and Low-Carbon Trucking Fuel Clash. By.

2017 Chevrolet Silverado 2500HD Returns Worst Fuel Economy In New Test . By Sean Szymkowski. May 31, ... The Ram 2500 HD marks a one mpg difference over the 2017 Chevrolet Silverado 2500 HD.

The bi-fuel CNG SIlverado 2500HD 4×4 is almost two seconds slower to 60mph and 5mph slower at the end of the 1/4-mile than running on unleaded E-10. Good to go. CNG vs GASOLINE.

A reviewer has tested the fuel economy of the 2020 GMC Sierra AT4 with the 6.6-liter Duramax V8 engine on a highway/city test loop. Read the results right here.

Auto makers are on a collision course with U.S. regulators over the timetable to achieve stringent fuel-economy standards as cheap gasoline sends consumers flocking to less-efficient pickup trucks ...