Changing Oil And Filter; Easy Engine Oil Drain System - Mercury MerCruiser 5.7 MPI User Manual

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

See 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 the
Specifications section).

Easy Engine Oil Drain System

NOTE: The boat must be out of water to perform this procedure.
1. Loosen the oil filter to vent the system.
2. Allow sufficient time for the oil to drain from the filter down into the engine block.
3. Remove the bilge drain plug.
90-899883173 DECEMBER 2007
All Models Capacity
4.25 L
(4.5 US qt)
33140
Oil fill cap
Mercury Full‑Synthetic MerCruiser Engine Oil 20W‑40
Section 5 - Maintenance
Fluid Type
Page 65