What oil should I use in my 4.3 MerCruiser?

Mercury Marine, the manufacturer of the 4.3L MerCruiser engine, specifies that the owner use Mercury MerCruiser Full-Synthetic Engine Oil, 20W-40, with a NMMC EC-W rating. This specific oil is recommended by the company for all MerCruiser engines, including the 4.3L.

What type of oil does a MerCruiser use?

MerCruiser Oil Specs The manufacturer recommends that its own MerCruiser SAE 20W-40 Full Synthetic Engine Oil be used.

How much oil does my MerCruiser take?

Fill the engine with the recommended oil with the proper quantity of oil—4.5 liters for a 4.5L sterndrive and 4.7 liters for a 6.2L sterndrive. We recommend using Mercury 25W-40 Synthetic Blend Oil; however, you can use Mercury 25W-40 oil.

How much gear oil does an Alpha One outdrive hold?

about 2 quarts
The Alpha One holds about 2 quarts of Mercruiser Premium Gear Lube. More if you have a remote Drive Lube Reservoir. We like to get 3 quarts of Mercruiser Premium Gear Lube and we use part of the first quart to flush through the drive to clean out some of the older lube.

Which oil is better 10w30 or 20W40?

20w 40 is a thicker oil when compared to the original 10w 30 oil. So 10w 30 oil is going to flow better than 20w40 oil when you initially start it and also run it. If the oil flows better the better the oil will lubricate and protect engine parts.

Do you need a quick reference for your MerCruiser oil capacity?

Need a quick reference for your Mercruiser oil capacity? PartsVu’s Mercury Mercruiser Engine Oil Capacity Chart specifies oil capacity for your specific engine and serial number range. Simply select your engine family, then make sure you are reviewing the correct serial number range for the engine you own.

What type of oil does a Mercury MerCruiser engine use?

Mercury Marine, the manufacturer of the 4.3L MerCruiser engine, specifies that the owner use Mercury MerCruiser Full-Synthetic Engine Oil, 20W-40, with a NMMC EC-W rating. This specific oil is recommended by the company for all MerCruiser engines, including the 4.3L.

How do I check the oil in my MerCruiser sterndrive?

Look up your Mercruiser sterndrive or inboard gas engine in the left column then check the make, cylinders, serial number range, etc. to find the proper amount of engine oil recommended by Mercury Marine. Engine oil capacity is only an APPROXIMATE; ALWAYS use dipstick to determine the exact amount of oil required. MCM = Sterndrive. MIE = Inboard