Mercruiser Oil Change In 8 Easy Steps

Changing your Mercury Mercruiser oil is a straightforward process and this article outlines step-by-step instruction.

Items Needed for Your Mercruiser Oil Change

• Oil drain pump
• Oil filter wrench
• Mercruiser oil filter
• Mercury 25W-40 Synthetic Blend Oil
• Socket wrench
• Container for capturing your old oil
• Funnel
• Clean rag

Mercruiser Oil Capacities

• 4.5L Sterndrive—4.5 liters (4.5 US quarts)
• 6.2L Sterndrive—4.7 liters (5 US quarts)

Oil Change Steps

1. Loosen your oil filter to help vent the system.
2. Remove your dipstick, insert your oil pump, and once your oil pump is inserted into the dipstick tube, pull the oil out into your oil capture container.
3. Remove the old oil filter the rest of the way.
4. Prep the new filter for installation by applying a light film of oil onto the face seal of the Mercruiser oil filter.
5. Thread the oil filter onto the oil filter mount and hand tighten.
6. Remove your Mercruiser’s fill cap and insert your funnel to prepare to add the new oil.
7. 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.
8. It's a good idea to run the engine with the proper water supply to check for any leaks and make sure that the proper oil level is maintained.

For more detailed information regarding these maintenance steps and to verify any details that may pertain to your specific engine model, please refer to your Mercury Mercruiser owner's manual.