Microlighters

What grade petrol is used in the Cubbies with the VW engines? The reason why I am asking this question: With the last VW engine I was supplied, came stickers, claiming that: "THIS ENGINE IS NOT SUITABLE FOR UNLEADED PETROL". By the time the engine installation was completed, "leaded" petrol was no longer available. So I tried unleaded petrol in my Softness`s Volla. Lo and behold, it is TROUBLESOME. (`63 model 1100cc Beetle). It keeps on clogging the plugs up. I tried "lead replacement". Even worse. The exhaust valves became STUCK.
I phoned the engine builder / supplier. "Oh, NO problem" he said, "just use unleaded petrol. It will not cause problems." When asked about the stickers, the lies just carried on..........

Hallo Superboet

95 oktaan "unleaded" werk redelik goed. Die enjin se drukverhouding moet verkieslik nie bo 7,5 : 1 wees nie. Alternatief is Avgas.

Groete

Hello Boet!
Ek het ook gewonder of my BMW-K75 (castings sê meesal '88) wat ek vlieg sou hou op unleaded, maar Bavarian Motorcycles kon/wou nie help nie. Toe het ek maar by elke geleentheid Avgas gegooi en later 'n drom Avgas in die hangar gehou en so 50/50 met unleaded gemeng.
Sien toe later 'n pos van David Daniels dat hy dieselfde aanbeveel vir selfs Rattex 2-slag enjins...
Hy reken die mengsel het dan naastenby dieselfde hoeveelheid lood en oktaan as wat ons voorheen gekry het.
Abe.