Our average of how long a generator ran, over various loads, on a full tank of gasoline or diesel fuel ... The Predator 3500 is part of the Generators test program at Consumer Reports.

Our average of how long a generator ran, over various loads, on a full tank of gasoline or diesel fuel, a 20-pound tank for propane-based portables, or a 250-gallon propane tank for stationary models.

As far as reliable generators go, users have had some pretty nice things to say about the Predator 3500, a generator manufactured and sold by the hardware brand Harbor Freight. This generator ...