Fuel And Oil - Mercury 15 EFI SeaPro Installation, Operation & Maintenance Manual

IMPORTANT: Do not try to fill the oil level to the top of the operating range
(upper hole). Oil level is correct as long as it appears in the operating range
between the upper and lower hole.
a - Oil fill cap
b - Dipstick
c - Oil level operating range
5. If the oil level is below the operating range (lower hole), remove the oil fill
cap and add approximately 200 ml (7 fl oz) of specified outboard motor
oil. Allow a few minutes for the added oil to drain to the oil sump and
check the dipstick. Repeat the process until oil level is in the operating
range between the upper and lower holes. Do not try to fill to the upper
end of the operation range (upper hole).
NOTE: Under certain conditions, the operating temperature of 4‑stroke
outboard engines may not get hot enough to evaporate the normal fuel and
moisture that accumulate in the crankcase. These conditions include operating
at idle for long periods, repeated short trips, slow speed or quick stop‑and‑go
operation, and operating in cooler climates. This additional fuel and moisture
that collects in the crankcase eventually ends up in the oil sump and will add
to the total volume of oil that appears on the dipstick reading. This increase in
oil volume is known as oil dilution. Outboard engines can typically handle large
amounts of oil dilution without causing durability problems. However, to ensure
extended life of the outboard engine, Mercury recommends that the oil and
filter be changed regularly following the oil change interval and using the
recommended oil quality. It is further recommended that if your outboard is
operated frequently in the conditions described above, that more frequent oil
change intervals be considered.
6. Push the dipstick back in all the way.
7. Install the oil fill cap hand‑tight.

FUEL AND OIL

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c
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eng