This is especially noticable if the bike has been sitting a while and if the weather's cool. It is water vapor condensation and it is perfectly normal. If you take the bike for a long ride and get it warm the milkiness will go away. Some people install shutoff valves to their oil coolers so the bike gets hotter in cool weather, or fashion oil covers to reduce airflow, but most people just go for a long ride instead.
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This is especially noticable if the bike has been sitting a while and if the weather's cool. It is water vapor condensation and it is perfectly normal. If you take the bike for a long ride and get it warm the milkiness will go away. Some people install shutoff valves to their oil coolers so the bike gets hotter in cool weather, or fashion oil covers to reduce airflow, but most people just go for a long ride instead.