OR
Klotz super techniplate.
Yeah and have you ever noticed how spectro smells like sh*t when you burn it?
on an air cooled engine you want a premix oil that contains some castor to reduce wear/heat and as a side effect castor makes power ,it burns a hotter BTU than gasoline does ,the high ratio full synthetics like amsoil dont have this and have a much higher flash point they dont burn well at lower rpms and most blasters probably dont rev over 8500 rpms evenetually it can lead to gunking up your crankcase and ports ,simply put ..they arent as good IMHO