Oil filter change interval?

Just after some opinions of change intervals that poeple use for oil filters.
The manual says to change it every 12000 kilometere but i think thats a bit long. The manual also says to change to oil every 6000KM - are they crazy?.
I currently run Motul 5100 10-40 and change it every 3000 KM. I have been doing the il filter at the same time.
Am i changing the filter to often or can i change it every 6000km
Thanks
The manual says to change it every 12000 kilometere but i think thats a bit long. The manual also says to change to oil every 6000KM - are they crazy?.
I currently run Motul 5100 10-40 and change it every 3000 KM. I have been doing the il filter at the same time.
Am i changing the filter to often or can i change it every 6000km
Thanks