[flatsixjunky]

Originally Posted by K-Jetronic

For your info:

Changed to BP 20w50 1 year ago.
Porsche oil filter.
Rebuilt engine, total 20000km.
No oil use.
Occasional track day.
Europe, mostly summer use, mild temperatures.
Fuel, unleaded 98 octane (europe).

Previous oil Mobil 1 0w40. Both drainplugs would show a little grey/white sludge like substance. No oil use, no smoke upon start cold or warm.

After change to BP, oil temperature a little bit higher. Little smoke upon startup after warm start (cold nothing). No oil use, oil pressure about the same when warm. Drainplugs, engine crankcase CLEAN! Oil tank very, very little black film on plug.

Hello k-jetronic

Are you talking about Brad Penn oil or British Pet oil? If it is Brad Penn where do you get yours here in Europe? On 10W40 I can only find Motul V300 or Kennol, there's no Mobil 1 10W40 around.

Thank you,

Orlando