Mercury 300 Verado - Filling Fuel Tank; Engine Oil Recommendations; Checking and Adding Engine Oil

FUEL AND OIL
22
Filling Fuel Tank
!
WARNING
Avoid serious injury or death from a gasoline fire or explosion. Use caution when filling fuel tanks.
Always stop the engine and do not smoke or allow open flames or sparks in the area while filling fuel
tanks.
Fill fuel tanks outdoors away from heat, sparks, and open flames.
Remove portable fuel tanks from boat to refill them.
Always stop engine before refilling tanks.
Do not completely fill the fuel tanks. Leave approximately 10% of the tank volume unfilled. Fuel will
expand in volume as its temperature rises and can leak under pressure if the tank is completely filled.
PORTABLE FUEL TANK PLACEMENT IN THE BOAT
Place the fuel tank in the boat so the vent is higher than the fuel level under normal boat operating
conditions.
Engine Oil Recommendations
Mercury Verado NMMA FC-W certified synthetic blend 25W-50 multi-viscosity 4-Stroke Outboard Oil is
recommended for general, all-temperature use. As an optional choice, Mercury or Quicksilver NMMA
FC-W certified synthetic 25W-40 multi-viscosity 4-Stroke Outboard Oil may be used. If the recommended
Mercury or Quicksilver NMMA FC-W certified oils are not available, a major brand of NMMA FC-W
certified 4-Stroke Outboard Oil of similar viscosity may be used.
IMPORTANT: The use of non-detergent oils, multi-viscosity oils (other than Mercury or Quicksilver
NMMA FC-W certified oil or a major brand NMMA FC-W certified oil), synthetic oils, low quality oils or
oils that contain solid additives are not recommended.
VERADO ENGINE OIL
SAE 25W-50
OIL CAPACITY: 7.0L (7.4 U.S. qt.)
C
+100
+80
+60
+40
+20
0
+38
+120
+49
+27
+16
+4
-7
-18
F
7.0L
29430
Checking And Adding Engine Oil
IMPORTANT: Do not overfill. Tilt outboard out/up past vertical for approximately one minute to allow
trapped oil to drain back to the oil sump. Tilt outboard to vertical (not tilted) position when checking engine
oil. For accurate readings, check oil only when engine is cold or after engine has not run for at least an
hour.
1. Before starting (cold engine) tilt outboard out/up past vertical to allow trapped oil to drain back to
the oil sump. Allow outboard to remain tilted for approximately one minute.
2. Tilt outboard to vertical operating position.
3. Remove the top cowl. Refer to Maintenance - Cowl Removal And Installation.
4. Pull out the dipstick. Wipe the dipstick end with a clean rag or towel and push it back in all the
way.
5. Pull the dipstick back out again and observe the oil level. Oil should be in the operating range
(cross hatched region).