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Where does one go to find the Porsche recommended minimum zinc and phosphorus concentrations and oil weight for a modern oil (dino, semi, or full synthetic) in an air cooled classic? With so many opinions, what does the manufacturer (aka implied experts) have to say?
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1982 Guards Red 911SC, 1994 Riviera Blue RoW 993, 2020 British Racing Green Macan GTS
Gone but not forgotten: 2017 GT Silver Turbo S, 2012 Guards Red 991.1 C2S, 2017 Carrera White Macan GTS
IG: @pcar911fan
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