Engine Oil Recommendations; Checking And Adding Engine Oil - Mercury 40 jet fourstroke User Manual

Engine Oil Recommendations

We recommend the use of Mercury or Quicksilver NMMA FC‑W
certified synthetic blend 25W‑40 4‑Stroke Outboard Oil for
general, all‑temperature use. If SAE 10W‑30 oil is preferred, use
Mercury or Quicksilver NMMA FC‑W certified 10W‑30 4‑Stroke
Outboard Oil. If the recommended Mercury or Quicksilver NMMA
FC‑W certified outboard oils are not available, a major brand of
NMMA FC‑W certified 4‑stroke outboard oil of similar viscosity
may be used.
When operating in temperatures above 4 °C (40 °F), we
encourage the use of NMMA FC‑W certified synthetic blend
25W‑40 4‑Stroke Outboard Oil.
IMPORTANT: The use of nondetergent 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.
F° C°
+38
+100
+27
+80
+16
+60
+40 +4
+20 -7
-18
0

Checking and Adding Engine Oil

IMPORTANT: Do not overfill. Be sure that the outboard is upright
(not tilted) when checking oil.
FUEL AND OIL
b
a -
b -
a
11583
Recommended SAE viscosity
for engine oil
NMMA FC‑ W certified
10W‑30 outboard oil may be
used at temperatures below
4 °C (40 °F)
NMMA FC‑W certified
synthetic blend 25W‑40
outboard oil may be used in
all temperatures
54
eng