Engine Oil-350/377 Mag And Seacore 350/377 Mag; Checking; Filling - Mercury 350 MAG Manual

Engine Oil—350/377 MAG and SeaCore 350/377 MAG

Checking

Discharge of oil, coolant, or other engine/drive fluids into the environment is restricted by law. Use caution not to spill oil, coolant,
or other fluids into the environment when using or servicing your boat. Be aware of the local restrictions governing the disposal
or recycling of waste, and contain and dispose of fluids as required.
1. Stop the engine. Allow approximately five minutes for the oil to drain into the oil pan. The boat must be at rest in the water.
2. Remove the dipstick. Wipe clean and reinstall fully into the dipstick tube. Wait 60 seconds to allow trapped air to vent.
NOTE: Ensure that dipstick is installed with oil level indication marks facing the rear of the engine (flywheel end).
IMPORTANT: Add the specified engine oil to bring the level up to, but not over, the full or OK range mark on the dipstick.
3. Remove the dipstick and observe the oil level. Oil level must be between full or OK range and add. Reinstall dipstick into
dipstick tube.

Filling

IMPORTANT: Do not overfill the engine with oil.
IMPORTANT: Always use the dipstick to determine the exact quantity of oil or fluid required.
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 Model
350 MAG and SeaCore 350 MAG
377 MAG and SeaCore 377 MAG
90-8M0050539 MAY 2011
eng
NOTICE
a - Dipstick tube
a
6095
Engine Oil Capacity
4.25 L (4.5 US qt)
6065
Fluid type
Mercury MerCruiser Full‑Synthetic Engine Oil, 20W‑40
Section 5 - Maintenance
Page 81