However, 20-gallon tanks are only sufficient for an outdoor grill or a small appliance such as a dryer. The most common propane tank sizes are 120, 250, 500 and 1,000 gallons. A 120-gallon tank is ...

They'll mean cheaper running costs but no loss of horsepower, torque or towing capacity ... per gallon used. The ROUSH propane-powered F-250 will come standard with an in-bed tank offering ...