What type of oil does a 80 hp mercury take?

An 80 hp Mercury outboard typically requires a high-quality two-stroke oil or four-stroke engine oil, depending on the specific model and year. For two-stroke engines, a TC-W3 rated oil is commonly recommended. If it's a four-stroke engine, follow the manufacturer's specifications for the appropriate oil viscosity, often 10W-30 or 10W-40. Always refer to the owner's manual for the exact requirements for your particular model.