However, neither antifreeze is friendly to the environment. As antifreeze moves through your engine, it picks up heavy metals, which are toxic to fish and other critters in the water. Instead of draining your antifreeze on the ground, drain it into a leakproof container and take it to a household hazardous waste collection site. For a list of HHW collection locations, follow this link . During long periods of storage, like over the winter, the gas in your lawnmower, weed eater, leaf blower, boat motor or other small engine equipment can get mixed with water.
Water condenses naturally inside the tank from moisture in the air.
This gum causes deposits of hard resin that can clog the fuel system, and perhaps cause an expensive trip to the engine repair shop. Some manufacturers recommend that the gas tank be drained before long periods of storage. An easier way to prevent gas from breaking down is to add a fuel treatment to your small engine gasoline. The additive will not only prevent your gas from breaking down, but will keep your fuel system clean and help your equipment to run better. You can get a fuel additive at any small engine shop.