Murky and grey is a strange description.
Can you take a picture of what you're seeing?
Just remember, a small amount of oil plus the fact that it also bathes the clutch means the oil won't stay looking like new very long at all.
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2008 WR250X
Gearing: 13t - 48t
Power Commander 5 / PC-V
Airbox Door Removed - Flapper glued - AIS removed
FmF Q4
Bridgestone Battlax BT-003rs