Yamaha RAPTOR YFM660R Owner's Manual page 393

MODEL
Engine oil:
Type
Recommended engine oil classification
Quantity:
Periodic oil change
With oil filter replacement
Total amount
-20˚ -10˚ 0˚
5W/30
10W/30
API Service SE, SF, SG type or higher
CAUTION:
Be sure to use motor oils that do not contain anti-
friction modifiers. Passenger car motor oils (often
labeled "ENERGY CONSERVING II") contain anti-
friction additives which will cause clutch and/or
starter clutch slippage, resulting in reduced com-
ponent life and poor engine performance.
1.9 L
1.95 L
2.3 L
10-2
YFM660R
20˚ 30˚ 40˚ 50˚C
10˚
10W/40
15W/40
20W/40
20W/50
10