I just bought a 2008 Streetmate R 2 months ago.
Yesterday my oil cable tore as I was coming home.
I'm getting rid of it and running premix instead.
To be fair, it has an Airsal Kit 64cc and Technigas Exhaust and I was cruising around at 50mph.
Also I have a 2005 Arrow bone stock, and I have been running it straight for 2 years and never any oiling issues.
Perhaps it's the modding that takes a toll on the oiling system?