Suzuki GW250 Service Manual page 266

* 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 60% and more anti-freeze or 50% and less. (Refer to Fig. 1 and 2.)
* Do not use a radiator anti-leak additive.
50% Engine coolant including reserve tank capacity
Anti-freeze
Water
(˚C)
(˚F)
32
–10
14
–20
–4
–30
–22
–40
–40
–50
–58
–60
–76
–70
–94
Fig. 1 Engine coolant density-freezing
point curve

* You can be injured by boiling 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, do not induce vomiting. Immediately contact a physician.
• Keep it away from children.
675 ml (0.7/0.6 US/lmp.qt)
675 ml (0.7/0.6 US/lmp.qt)
0
20 40 60 80 100
Density (%)
COOLING AND LUBRICATION SYSTEM 7-3
(˚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