Yamaha Raptor YFM660RT Owner's Manual page 172

MODEL
Engine oil:
Type
Recommended engine oil classification:
Quantity:
Without oil filter cartridge replacement
With oil filter cartridge replacement
Radiator capacity (including all routes):
Air filter:
0˚
10˚ 30˚
YAMALUBE 4 (10W30) or SAE 10W30
SAE 5W30
-20˚ -10˚ 0˚
API Service SE, SF, SG type or higher
CAUTION:
In order to prevent clutch slippage (since the en-
gine oil also lubricates the clutch), do not mix any
chemical additives. Do not use oils with a diesel
specification of "CD" or oils of a higher quality
than specified. In addition, do not use oils labeled
"ENERGY CONSERVING II" or higher.
1.9 L (1.67 Imp qt, 2.01 US qt)
1.95 L (1.72 Imp qt, 2.06 US qt)
1.3 L (1.14 lmp qt, 1.37 US qt)
Wet element
10-2
YFM660R
90˚ 110˚ 130˚F
50˚ 70˚
YAMALUBE 4 (20W40) or SAE 20W40
20˚ 30˚
10˚
40˚ 50˚C