---- Kim Brennan <kimbrennan@MAC.COM> wrote:
> Only 15w50 I've seen was a Pennzoil racing oil. Used it in my Westy before I put a subaru power plant in.

Well, Mobil 1, the standard for many on this list, definitely comes in 15W50.  I am now seeing some oils, including Castrol in various specific brands, come in 5W50.  Don't know about that in application, though.

http://www.castrol.com/liveassets/bp_internet/castrol/castrol_usa/STAGING/local_assets/downloads/p,q/EDGE_Black_PDS_april2011.pdf

http://www.castrol.com/liveassets/bp_internet/castrol/castrol_usa/STAGING/local_assets/downloads/p,q/pds_syntec_usa.pdf

http://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1_15W-50.aspx

mcneely
>
> On Jul 31, 2011, at 12:47 PM, Dennis Haynes wrote:
>
> > I have never seen Castrol GTX in 10 or 15-50. The norm is 20w-50. This is an
> > oil for the modified and collector car crowd. Very good stuff and will hold
> > higher pressure than a 15w-40 Diesel oil.
> >
> > Dennis
> >
> > -----Original Message-----
> > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> > Karl Wolz
> > Sent: Saturday, July 30, 2011 2:28 PM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: Re: Oil Pressure observation.
> >
> > That seemed to be something of a consensus after the discussion of zinc
> > additives, or a lack thereof, a month or so ago.  I've been using Castrol
> > GTX 10w/50 (might be 15, thinking about it), and am considering changing
> > when I next change oil before I leave Phx for Seattle in early September.
> >
> > I'm looking forward to someone taking me by the hand and saying, "Do it this
> > way" (and being correct about it, of course).
> >
> > Karl Wolz
> >

--
David McNeely