Oil Recommendation; Non-Oil Injected Models: Mh, Eh; Oil Injected Models: Eho, Ehpto, Eo, Epto - Mercury 40/50 Series Manual

Oil Recommendation

Recommended Oil
IMPORTANT: Oil must be NMMA certified TC‑W3 2‑Cycle oil.
Mercury or Quicksilver Premium TC‑W3 2‑Cycle oil is
recommended for this engine. For added protection and
lubrication, Mercury or Quicksilver Premium Plus TC‑W3 2‑Cycle
oil is recommended. If Mercury or Quicksilver outboard oil is not
available, substitute another brand of 2‑cycle outboard oil that is
NMMA Certified TC‑W3. Severe engine damage may result from
use of an inferior oil.
Non‑Oil Injected Models: MH, EH
Add engine oil into the fuel tank. The mixing ratio with gasoline is
50:1 (50 parts gasoline and one part oil). Mix well by hand. The
mixing ratio during break‑in running is 25:1.
Mixing ratio
During break‑in
After break‑in
Pour oil into the fuel tank.
Pour gasoline into the fuel tank.
ENGINE BREAK-IN
Engine Break-in Fuel Mixture
Use a 25:1 gasoline/oil mixture in the first tank of fuel.
Engine Break-in Procedure
Refer to Operation - Engine Break-In Procedure for correct
break‑in procedure.

Oil Injected Models: EHO, EHPTO, EO, EPTO

The required amount of engine oil is automatically supplied from
the oil pump according to the engine running conditions.
FUEL AND OIL
Mercury or Quicksilver Premium 2-Cycle TC-W3
Outboard Oil
Gasoline
25
50
70
Engine Oil
1
1