Engine Coolant - Suzuki RM85 Owner's Service Manual

2-8 PERIODIC MAINTENANCE

ENGINE COOLANT

ENGINE COOLANT LEVEL CHECK
You can be injured by scalding fluid or steam if you
open the radiator cap when the engine is hot.
Do not open the radiator cap when the engine is hot.
Wait until engine cools.
• Remove the radiator cap 1.
• Check that the engine coolant level is at the bottom of the inlet
hole. If not, replenish the radiator with specified engine cool-
ant.
• Tighten the radiator cap securely.
Improperly tightening the radiator cap will prevent the
cooling system from reaching the specified operating
pressure and will cause coolant overflow.
Tighten the radiator cap until it locks firmly.
NOTE:
* This motorcycle does not have an overflow tank at the end of
breather hose. Therefore, engine coolant level may decrease
while riding. Check the engine coolant level every time before
riding.
* When replenishing engine coolant, be sure to use engine cool-
ant mixed with distilled water at the ratio of 50 : 50. Adding
only water will dilute engine coolant and it may decrease cool-
ing performance.
* If the motorcycle is to be exposed to temperatures below –31
°C (–24 °F), the percentage of antifreeze should be increased
to 55% or 60%, according to figure 1.
Antifreeze density
50%
55%
60%
WARNING
CAUTION
Freezing point
–31 °C (–24 °F)
–40 °C (–40 °F)
–55 °C (–67 °F)
Density (%)
Fig. 1 Engine coolant density-boiling point