Engine Oil Recommendations; Checking Engine Oil - Mercury 5 HP FourStroke Propane Operation, Maintenance And Installation Manual

Engine Oil Recommendations

Mercury or Quicksilver NMMA FC‑W certified SAE 10W‑30 4‑Stroke Marine
Engine Oil is recommended for general, all‑temperature use. If NMMA certified
synthetic blend oil is preferred, use Mercury or Quicksilver SAE 25W‑40
Synthetic Blend Marine 4‑Stroke Engine Oil. If the recommended Mercury or
Quicksilver NMMA FC‑W certified outboard oils are not available, a major
FC‑W certified 4‑stroke outboard oil may be used.
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.
F° C°
+38
+100
+27
+80
+16
+60
+40 +4
+20 –7
–18
0

Checking Engine Oil

IMPORTANT: Do not overfill. Be sure that the outboard is upright (not tilted)
when checking the oil.
1. Position the outboard vertically, 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 the oil level on the dipstick. The oil must be between the full mark
and the add mark. If the oil level is low, add oil to bring the level no higher
than the full mark.
FUEL AND OIL
b
a
26795
16
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
eng