[rfuerst911sc]

I checked the owners manual again and it does recommend Castrol brand and suggests 5W30 , 0W30 or 0W40 . Not knowing what is in there now I will switch to synthetic . Don't want this to turn into an oil thread so I'll stop there .

I also noticed the caps on the tire valve stems say " N2 " on them does that indicate that nitrogen is in the tires ? I have never owned a vehicle with nitrogen in the tires . What are the do's and don'ts ? Can I top off if needed with regular compressed air ?