Mercury 8 User Manual

FUEL AND OIL
42
Engine Oil Recommendations
We recommend the use of Mercury or Quicksilver SAE 10W‑30
multi‑viscosity 4‑Stroke Outboard Oil for general, all‑temperature
use. If SAE 25W‑40 multi‑viscosity oil is preferred, use Mercury
MerCruiser 4‑cycle engine oil or Quicksilver sterndrive & inboard
4‑cycle engine oil. Never use 4‑cycle engine oil that is not certified
to meet or exceed any one or combination of the following
American Petroleum Institute (API) Service Classification SH, SG,
SF, CF‑4, CE, CD, CDII. Severe engine damage may result from
use of an inferior oil.
+20
+40
+60
+80
F° C°
0
+100
–7
+4
+16
+27
–18
+38
a
b
26795
Recommended SAE Viscosity for Engine Oil
a - SAE 25W‑40 viscosity oil may be used at temperatures
above 4 °C (40 °F)
b - SAE 10W‑30 viscosity oil is recommended for use in all
temperatures.
Checking Engine Oil
IMPORTANT: Do not overfill. Be sure that the outboard is upright
(not tilted) when checking oil.

Mercury 8 Specifications

General

Full Throttle RPM	5000-6000 RPM
Cylinders	2
Gear Ratio	2.08:1
Horsepower	8 HP
Starting	Manual
Shaft Length	15 in, 20 in
Fuel Tank Capacity	External