Changing Oil And Filter - Mercury 2.8 Diesel Operation & Maintenance Manual

Section 4 - Maintenance
2.8
Engine oil (with filter)
4.2
Engine oil (with filter)
IMPORTANT: Always use the dipstick to determine the amount of oil required to refill the engine oil.
3. Install the oil fill cap.

Changing Oil and Filter

See the Maintenance Schedule for the change interval. You should change the engine oil before placing the boat in storage.
IMPORTANT: Change the engine oil when the engine is warm from operation. Warm oil flows more freely, carrying away more
impurities. Use only recommended engine oil. See Specifications.
1. Start the engine and allow it to warm up to normal operating temperature.
2. Stop the engine and allow some time for the oil to drain into the oil pan (approximately five minutes).
3. Remove the fitting from the end of crankcase oil drain hose.
4. Install the crankcase oil pump (order separately) onto the threaded fitting of the oil drain hose.
b
a
Crankcase oil pump
5. Pump the oil out of the crankcase into the drain pan.
6. Contain and dispose of the oil or oil waste as directed by local authorities.
7. Remove the crankcase oil pump and install the crankcase oil drain hose fitting when the crankcase is empty. Tighten
securely.
8. Install the oil dipstick.
9. Place a suitable container under the oil filter housing to contain any oil leakage that may occur. Use an appropriate socket
to loosen the oil filter top piece.
10. Remove the top piece and cartridge type oil filter.
Page 42
Capacity
8.9 L (9.4 U.S. qt)
Capacity
13.8 L (14.6 U.S. qt)
Aids in the removal of engine oil without draining the crankcase.
11591
Fluid Type
4‑Cycle 15W40 Marine Engine Oil
Fluid Type
4‑Cycle 15W40 Marine Engine Oil
Typical
a - Threaded fitting
c
b - Oil drain hose
c - Crankcase oil pump
a
b
23306
91‑90265A 5
90-8M0113987
eng
DECEMBER 2015