Bob, I believe most parafinic oil stock comes from Pennsilvania Crude. I was once told that Pennsoil was very dirty and lead to ash buildup quickly in engnes. Valvoline by comparison did not, however both were Pennsilvania based parafinic oils. Might have to do with other factors in the formulation? Don ----- Original Message ----- From: "Robert Brandys" <BobB@xxxx> To: <dmcnews@xxxxxxxxxxxxxxx> Sent: Wednesday, August 07, 2002 6:24 AM Subject: Re: [DML] what kind of turbo? > > > Donald > > I would be very careful about paraffinic based crude oil products. > Years ago a study was done of this type of oil versus non-paraffinic > oils . The parafinic products contained more wax type long change > hydrocarbons. These tended to brake down easily and carbonize resulting > in waxy build up in motors and earily motor failure. > > From my experience, over 45 years. THe dirty engines that I have seen > were from paraffinic based oils. > > BOB > > > > To address comments privately to the moderating team, please address: > moderator@xxxx > > To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >