2010 Argo 6x6 Frontier 650, 2010 Argo 6x6 Frontier 650 - The ARGO 6x6 650 Frontier is a six-wheel drive amphibious off-road vehicle. It features a four-cycle OHV V-Twin air cooled 627 cubic centimeters, 23 horsepower, Briggs & Stratton Cooler Cleaner engine with 20/50 Amp charging system and electronic ignition. It has a load capacity of 700 pounds on land or 500 pounds on water. The Frontier 6x6 650 uses regular unleaded gasoline, and has low emissions.