I use Vavoline 2 stroke oil 1:30 mix, but plan to do 1:40 after few more liters of fuel trough it, i have now only 3 litres trough it. For break in process (atleast first 5 liters) should be mixed 1:30
Btw: Here's How Peak Looked Alike when i got it: http://fotki.lv/DronN/378863/
And Here's How it looks now http://fotki.lv/DronN/451084/