Mercury 25 Jet FourStroke - Checking and Adding Engine 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 or oils that contain solid additives are not
recommended.
Recommended SAE viscosity for
engine oil
a - Mercury or Quicksilver SAE
25W‑40 Synthetic Blend Marine
4‑Stroke Engine Oil may be used
at temperatures above 4 °C
(40 °F)
b - Mercury or Quicksilver SAE
10W‑30 4‑Stroke Marine Engine
Oil is recommended for use in all
temperatures
Checking and Adding Engine Oil
IMPORTANT: Do not overfill. Be sure that the outboard is upright (not tilted)
when checking oil.
1. Turn the engine off. Have the outboard in a level operating position.
Remove the top cowl.
+20
+40
+60
+80
F° C°
0
+100
–7
+4
+16
+27
–18
+38
a
b
26795
FUEL AND OIL
22 eng