Cutting the grass with my propane fueled lawn mower. Overall, it ran very well until about 5:20 where the propane canister ran low and the engine lost power while I was trying to shred some oranges on the ground that had fallen from my orange tree. Other than that, it ran pretty much the same as any lawnmower engine would on gasoline. Special Thanks to Roberto's lawnmower for hooking me up with a mulching blade.