How much oil does a 40 hp Mercury outboard take?
3 quarts
Remove the filler cap from the back of the powerhead, then fill the outboard with 3 quarts of Mercury 4-stroke marine engine oil and replace the filler cap.
When should I change the oil in my Mercury 4 stroke outboard?
The maintenance schedule for the Mercury 150 FourStroke, and for most four-stroke outboards, calls for changing the oil and the oil filter every 100 hours, or annually. For many boat owners this annual oil change is part of preparing the outboard off-season storage.
Can you use auto oil filter on boat?
Many enthusiasts swear by using automotive filters for marine applications, but I personally would err on the side of caution and spend the extra bucks for corrosive protection. You also risk voiding the warranty on new boats if something were to happen.
Can I mix Quicksilver and Mercury oil?
Re: mercury oil The mechanic at Bucks said to not mix quicksilver and merc premium because they coagulate and cause the engine to foul.
How often should I change the oil in my Mercury outboard?
It is recommended that the oil and the oil filter be changed every 100 hours or annually on most four-stroke outboards, including the Mercury 150 FourStroke. The annual oil change is a common part of preparing the outboard for storage off-season for many boat owners.
How often do you add oil to a 4 stroke outboard?
The maintenance schedule for most four-stroke outboards calls for an oil and oil filter change every 100 hours, or annually. If you put your boat up for the winter, professional technicians suggest changing the oil as part of preparation for off-season storage.
Is there a difference in marine oil and regular oil?
Marine oil is formulated and designed for the harshest saltwater environment. Automotive oils don’t operate in the constantly corrosive environment that boats do, so marine oils have much higher levels of anti-corrosive additives in them.
Can you use car oil in a boat?
Use the right lubricant —Marine and auto oil are not interchangeable. Although oil in a four-stroke marine engine performs the same function as it does in an automobile engine, passenger car motor oil should not be used in marine engines. The two primary reasons for this: water and wear.