Increase Semi Truck Fuel Economy It seems most oil companies claim to be able to increase semi truck fuel economy in most any type of truck.  Few companies can prove their claims with bona-fide real-life, real-world fleet studies.  AMSOIL Inc, a true-blood American company, is one business that has done just that. AMSOIL Proves Ability To Increase Semi Truck Fuel Economy Performing real-world fleet studies takes a lot of time, effort and money.  It is difficult to keep the study equal between the test vehicles so that a true apples-to-apples comparison can be made.  Driving conditions, driver... (Read More ...)