Boat in snow

From your perspective:

Is it too late to add a fuel stabilizer to my boat and other power equipment I’ve stored for the winter?

— Burl B., Redmond, Wash.

Not necessarily. Fuel stabilizer that’s formulated for your engine type still might protect your out-of-season equipment from a hard start when you begin using it again in the spring, and it might help prevent carburetor and gasket problems caused by gummy, degraded old fuel. Following manufacturers’ instructions, fill the tank with a fresh fuel and stabilizer mix, and run the engine to circulate it. The full tank helps prevent moisture problems from condensation and can prevent corrosion inside the tank. However, if you suspect the fuel in your power equipment has already gone bad, fuel stabilizers can’t restore it.