Your propane tank's expiration date is stamped on collar. If you have an empty 20-gallon propane tank that's past its expiration date or that you believe is damaged, you should recycle it.

a 20-pound tank for propane-based portables, or a 250-gallon propane tank for stationary models. The DuroMax XP10000HX is part of the Generators test program at Consumer Reports. In our lab tests ...

a 20-pound tank for propane-based portables, or a 250-gallon propane tank for stationary models. The Generac GP5500 5939 is part of the Generators test program at Consumer Reports. In our lab ...