Changing Oil And Filter; Easy Engine Oil Drain System - MerCruiser 8.1 MAG Owner's Manual

Section 5 - Maintenance
1. Remove oil fill cap.
IMPORTANT: Add the specified engine oil to bring the level up to, but not over, the full or
OK range mark on the dipstick.
2. Add the specified engine oil to bring the level up to, but not over, the full or OK range
mark on the dipstick. Recheck oil level.
3. Replace the fill cap.
Engine Oil (With Filter)

Changing Oil and Filter

Refer to the Maintenance schedule for the change interval. Engine oil should be changed
before placing the boat in storage.
IMPORTANT: Change engine oil when the engine is warm from operation. Warm oil flows
more freely, carrying away more impurities. Use only recommended engine oil (refer to
Specifications).

EASY ENGINE OIL DRAIN SYSTEM

NOTE: Boat must be out of water to perform this procedure.
1. Loosen the oil filter to vent the system.
2. Remove the bilge drain plug.
3. Pull tether through the bilge drain.
a
b
Page 68
a
a - Oil fill cap
All Models Capacity
8.5 liters
(9 U.S. Quart)
c
a - Bilge drain plug
b - Tether
c - Clip
5581
Fluid Type
Mercury/Quicksilver Synthetic Blend MerCruiser Engine Oil
25W‑40
d
e
d - Oil drain hose plug
e - Oil drain hose
f - Bilge drain flange
90-864839070 AUGUST 2007
f
7284