What petrol?

[Boet]

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..........

[priester]

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

[Abe]

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.