synthetic

Is it necessary to change engine oil every two or three track days? My bike has Motul 300V fully synthetic oil and I was wondering if it's ok to change it every 4000 miles.

Is it better to put fully synthetic oil at 620 miles or continue with KTM recommended Motorex semi-synethic? Which oil do you use?

I went looking for some good oil to do my first service (early). I'm not a fanboy of the OEM oil recommendations on most toys and I didn't feel it necessary to spend extra on the good oil, that I will be flushing out soon enough anyway. With that being said, I stopped at my local Cycle Gear...