Do you mix oil into the gas of a Polaris Trail Boss 350 4-stroke?
No, you do not mix oil into the gas of a Polaris Trail Boss 350 4-stroke. This ATV has a four-stroke engine, which means that oil and gas are separate. The oil is stored in the engine's oil sump, and the gas is stored in the fuel tank. When the engine is running, the oil is pumped through the engine to lubricate the moving parts.