oil and filter

What kind of oil do u guys use on your bikes? also what oil filter?

Do you use car or motorcycle oil?
Synthetic, semi or regular?

I am going to do my first oil change on my bike(bought it used with 2100 km). Right now it has about 2750 km. I am going with regular motorcycle 10W-40 oil (Castrol GP) and a OE suzuki oil filter.

I use the Suzuki filter and also Motul motorcycle oil (synthetic) 10w40.

You can pretty much use any oil as long as you change it often and never ever use car oil, it's not the same.