Rick wrote in message hlink.net...
Rick wrote:

Would you care to enlighten the rest of us as to why Pennsylvania crudes
make, in your opinion?

Oops, dropped a line there ... should read:

... makes less than perfect lube oil ...

Rick

I can! Oils from Texas crude, Calfornia crude, Alaska crude,
California crude, Pennsylvania crude all has different amounts of some
ingredients. This makes oil from some of those crudes not as slippery.
To develop these oils to pass testing, additives are sometimes used.
One of the chief components that is different in different crudes, is
paraffin. Pennsylvania crude actually has less paraffin naturally
occuring, and thus, is added. The added paraffin, for SOME reason,
tends to leave deposits.