also some oils are more prone to this,
Humm, I have been using castrol 20/50 for years and only reason I saw this was due to the fact I was changing the gasket on my cylinder head. In Toronto, so cold and damp at times for sure - no long drives possible unless I get a stretch of good weather.
I have gotten feedback from multiple sources that it is truly condensation and lack of extended driving times to burn it off - that makes sense