My owners manual is on the boat otherwise I would consult it. Anyone know off hand if the merc 115 4strokes have the oil fogging valve connection on the engine. I am going to buy some fogging spray today and assume a new engine would have that fogging valve attachment as standard fair. I also plan on draining the engine oil and lower unit and putting fresh oil in. Already have have stabil marine in the gas. I also have to run some antifreeze mix through the water intake. Storing the boat outside in New England, winter was brutal last year.