Anybody ever had one of these 20 to 1 mix 2 strokes apart?

[atlarge54]

It's Italian and sold by Simer pumps. I think it is about 30cc might be similar to a moped engine. Anything that would scare you as far as just running my normal 50 to 1 synthetic mix?

 

[Little Al]

Suggest if you are using synth oil in the mix start with 32/1couple of tanks & check plug& shine light down plug hole & note piston for goo/carbon you could go 40/1 but wouldn't go any further north than that I would think semi synth would be OK at those ratio's

 

[NSEric]

The 20-1 is recommended so you can use any plain old motor oil for premix and not kill it, 40 or 50-1 with good oil will be fine but you will have to lean it out a little when you switch ratios.
My Chinese chainsaws recommended 25-1 and they get 40-1, this did make them run rich and not rev as high as they did on 25-1 so I leaned them out.