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First time writing on this board ! But i`ve been reading for the past year or so.
Lorenfb.
Can you please explain to me why is it that my -86 Carrera, (930/20 RoW) runs perfect without any knock on european gas with an octane number RON 95, (US 91 i believe) The original handbook clearly states to use 98 (US 93 i believe) ?? We are quite a few of us that has been running this gas for several years now, with tens of thousands kilometers. This without any problem.
I had a top-end job performed last summer due to worn out inlet valve guides/valves at 131 k km. This after driving some 30 k kilometers on 95 and there was no sign of any problems at all that in any way could be caused by using a lower octane rating than that Porsche prescribes. I even DE`s my car 2- 3 times a year.
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Magnus Rostadmo
-89 944 2,7 Taubenblau
x-86 911 3,2 Carrera Muscatbraun / x-81 911 3,0 SC Zinnmet / x-84 944 Zermattsilber / x-83 911 3,0 SC Schieferblaumet / x-83 944 Geminigraumet
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