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47
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6. ENGINE OIL
Using engine oil of the correct grade and viscosity greatly lengthens engine life and improves performance.
Too much or too little oil can also result in serious problems, including engine seizure.
6-1 CLASSIFICATION BY OIL GRADE
API (American Petroleum Institute)
6-2 CLASSIFICATION BY OIL VISCOSITY
SAE (Society of Automotive Engineers)
Be sure to use automobile engine oil of the viscosity shown in the table above, depending on environmental air
temperature.
When the air temperature falls below –20°C or rises above 40°C , be sure to choose engine oil of appropriate
viscosity and grade, according to the prevailing conditions.
※Care must be taken when using multi-grade engine oil, because the oil consumption rate tends to increase
when the air temperature is high.
6-3 ADDING AND CHANGING ENGINE OIL
○ Engine oil inspection and filling up............. Every time you use the engine
(add engine oil up to the designated maximum level)
○Engine oil change ..................................... First time ............After 20 hours’ use
Thereafter ...........Every 100 hours’ use
Grades suited for Robin Engine: SE or higher (SG,SH or SJ in recomended)
Ambient
temperature
Single grade
Multigrade
5W
10W
20W
#20
#30
#40
10W
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30
10W
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40
Classification SA SB SC SD SE SF SG SH SJ
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