Engine Coolant - Suzuki VZ800 Service Manual

7-2 COOLING AND LUBRICATION SYSTEM

ENGINE COOLANT

At the time of manufacture, the cooling system is filled with a
50:50 mixture of distilled water and ethylene glycol anti-freeze.
This 50:50 mixture will provide the optimum corrosion protection
and excellent heat protection, and will protect the cooling system
from freezing at temperatures above –31 °C (–24 °F).
If the motorcycle is to be exposed to temperatures below –31 °C
(–24 °F), this mixing ratio should be increased up to 55% or 60%
according to the figure.

* Use a high quality ethylene glycol base anti-freeze,
mixed with distilled water. Do not mix an alcohol
base anti-freeze and different brands of anti-freeze.
* Do not put in more than 60% anti-freeze or less than
50%. (Refer to Right figure.)
* Do not use a radiator anti-leak additive.
50% Engine coolant including reserve tank capacity
Anti-freeze
Water

* You can be injured by scalding fluid or steam if you open the radiator cap when the engine is
hot. After the engine cools, wrap a thick cloth around cap and carefully remove the cap by
turning it a quarter turn to allow pressure to escape and then turn the cap all the way off.
* The engine must be cool before servicing the cooling system.
* Coolant is harmful;
• If it comes in contact with skin or eyes, flush with water.
• If swallowed accidentally, induce vomiting and call physician immediately.
• Keep it away from children.
750 ml (1.6/1.3 US/lmp.pt)
750 ml (1.6/1.3 US/lmp.pt)
Anti-freeze
Freezing point
density
–30 ˚C (–24 ˚F)
50%
–40 ˚C (–44 ˚F)
55%
–55 ˚C (–67 ˚F)
60%
(˚C)
(˚F)
0
32
–10
14
–20
–4
–22 –30
–40
–40
–50
–58
–60
–76
–70
–94
20 40 60 80 100
Density (%)
Fig.1 Engine coolant density-freezing
point curve.
(˚F) (˚C)
302 150
284 140
266 130
248 120
230 110
212 100
0 10 20 30
Density (%)
Fig.2 Engine coolant density-boiling
point curve.
(kgf/cm²)
1.5
0.9
0.5
0
40 50 60