FUEL AND OIL
55
IMPORTANT: When operating a Mercury Marine engine on
gasoline containing alcohol, storage of gasoline in the fuel tank for
long periods should be avoided. Long periods of storage, common
to boats, create unique problems. In cars, alcohol‑blend fuels
normally are consumed before they can absorb enough moisture
to cause trouble, but boats often sit idle long enough for phase
separation to take place. In addition, internal corrosion may take
place during storage if alcohol has washed protective oil films from
internal components.
Oil Recommendation
Recommended Oil
Mercury or Quicksilver Premium 2-Cycle TC-W3
Outboard 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.
Mixing Fuel and Oil
Use a 1:25 oil/gasoline mixture in the first tank of fuel.
After the break‑in fuel mixture is used up, use a 1:50 oil/gasoline
mixture. Refer to the table (following) for mixing ratios.
GASOLINE/OIL MIXING RATIO CHART
GASOLINE/OIL MIXING RATIO CHART
Oil/
Gas Ratio
3.8 liters (1 gal.) gas
11.5 liters (3 gal.)
gas
23 liters (6 gal.)
gas
1:25
148 ml (5 fl. oz.) oil
473 ml (16 fl. oz.)
oil
946 ml (32 fl. oz.)
oil
1:50
89 ml (3 fl. oz.) oil 237 ml (8 fl. oz.) oil
473 ml (16 fl. oz.)
oil
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