Power Steering Fluid; Checking; Filling - MerCruiser 350 MAG Owner's Manual

IMPORTANT: Always use dipstick to determine exactly how much oil is required.
5. Add recommended engine oil to bring level up to the bottom of the OK range on the
dipstick.
6. With the boat at rest in the water, check the oil level and add specified fluid to bring the
oil level up to, but not over, the full or OK range.
NOTE: Adding 0.95 L (1 qt) of engine oil will raise the level from the add mark to the top
of the OK range.
350 MAG and SeaCore 350 MAG
377 MAG and SeaCore 377 MAG
7. Start the engine, run the engine for three minutes, and check for leaks. 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.

Power Steering Fluid

Checking

1. Stop the engine and center the sterndrive unit.
2. Remove the fill cap/dipstick and observe the level.
a.
b.
3. Fill to full line with specified fluid.
IMPORTANT: If fluid is not visible in pump, contact your authorized Mercury MerCruiser
dealer.

Filling

1. Remove the fill cap/dipstick and observe the level.
2. Add Quicksilver Power Trim and Steering Fluid or Dexron III Automatic Transmission
Fluid (ATF) to bring the fluid level up to the proper level.
90-864195072 OCTOBER 2007
Engine Model Engine Oil Capacity
4.25 L (4.5 US qt)
Proper fluid level with engine at normal operating temperature should be within
the warm range.
Proper fluid level with engine cold should be within the cold range.
a
a - Power steering pump
b - Cold range
Section 5 - Maintenance
Fluid type
Mercury MerCruiser Full‑Synthetic Engine Oil,
20W‑40
b
c
6100
c - Warm range
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