Does 4 cycle require oil in fuel?

Yes, a 4-cycle engine does not require oil mixed in the fuel. Instead, it has a separate lubrication system where oil is contained in the crankcase and circulated through the engine to lubricate moving parts. This design helps improve efficiency and reduce emissions compared to 2-cycle engines, which require oil to be mixed with fuel for lubrication. Always refer to the manufacturer's specifications for proper maintenance and oil type.