Yamaha KODIAK 450 YFM450FAT Owner's Manual page 429

Model
Starting system
Lubrication system
Engine oil:
Type
Recommended engine oil classification
YFM450FA
Electric and recoil starter
Wet sump
-20˚ -10˚ 0˚
5W/30
10W/30
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.
10-2
50˚C
10˚ 20˚ 30˚ 40˚
10W/40
15W/40
20W/40
20W/50
10