Synthetic 2 stroke oil

[SkyPup]

I'm sure it a combination of the increased lubrication and increased combustion of the synthetic oil itself which requires the change in jetting. It idles much much faster and you have to decrease the idle fuel flow to get it to even idle properly and then it runs out on the main jet to a much higher wide open throttle rpm.

I use Motul 100% Ester or Amsoil Racing Two-Stroke 100% Ester, there is absolutely NO comparison to any dino oil.

Motul Kart Racing 2T 20,000 RPM

http://www.motorspot.com/Kart_Racing_2T_3215_(GB).pdf


NO stinkin' low life dino oil would work at 23,000rpms for 50 hours..........

 

[slowrev]

Is it the change in lubrication or volatility, or density that makes them run different?

I always beleived it was a function of the combustion / jetting, more then the lubricity that was changing.

Slow, which brand of oil? I am unfamiliar with a full synth running 32:1

You are correct I was off on the ratio, it is 40:1.