Checking Engine Oil - Mercury 4 FourStroke Manual

IMPORTANT: The use of 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
or oils that contain solid additives are not recommended.
F°
+100
+80
+60
+40
+20
0

Checking Engine Oil

IMPORTANT: Do not overfill. Be sure that the outboard is upright
(not tilted) when checking oil.
1. Position the outboard vertical and remove the top cowl.
2. Remove the oil filler cap. Wipe oil off the dipstick and screw
the oil filler cap back into the oil fill hole completely. Remove
the oil filler cap and check oil level on dipstick. Oil must be
between full mark and add mark. If oil level is low, add oil to
bring level no higher than the full mark.
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FUEL AND OIL
a
C°
+38
+27
+16
+4
–7
–18
26795
b
Recommended SAE viscosity
for engine oil
a - NMMA FC‑W certified
25W‑40 4‑stroke outboard
oil may be used at
temperatures above 4 °C
(40 °F)
b - NMMA FC‑W certified
10W‑30 4‑stroke outboard
oil is recommended for use
in all temperatures.
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