Jake, I do have an oil pressure gauge, and after a series of miss steps, got one that actually reads accurately (previous owner had installed a gauge, but with the wrong sender for that particular gauge).  So, you think that even with temps up around 105, and the waterboxer struggling to remain cool enough, the 15W-40 in a brand you trust (several have been suggested) is better.  Is that because it has more zinc?  Thanks

---- Jake de Villiers <crescentbeachguitar@gmail.com> wrote:
> Hey Dave, 15W40 is truck oil and as such has a much better additive package
> that the 20W50 car oil you've been using.
>
> If you had an oil pressure gauge, you'd notice that your pressure drops off
> much less with mileage accumulation than it does with the car oil.
>
> I love Shell Rotella T  15W40 and use it in almost everything...
>
> On Sat, May 22, 2010 at 2:02 PM, Dave Mcneely <mcneely4@cox.net> wrote:
>
> > ---- Scott Daniel  - Turbovans <scottdaniel@turbovans.com> wrote:
> > > for a weight, 15W40 is what I use, almost exclusively.
> >
> > > I have used a lot of Chevron Delo 15W40...
> >
> > > anyway....15W40 in a quality brand does it for me.
> > > Scott
> >
> > Scott, 15W-40 may work fine where you drive.  I drive in well over 100 F at
> > times, and so prefer to stick with the 20W-50 that is recommended by VW for
> > summer temps.  You are satisfied with results you've gotten with Chevron
> > Delo.  Do you know if it is available in 15W-50?  Guess I need to look
> > about.
> >
> > Thanks for your commentary.
> >
> > David McNeely
> >
>
>
>
> --
> Jake
>
> 1984 Vanagon GL 1.9 WBX 'The Grey Van'
> 1986 Westy Weekender/2.5 SOHC Suby 'Dixie'
>
> Crescent Beach, BC
>
> www.thebassspa.com
> www.crescentbeachguitar.com
> http://subyjake.googlepages.com/mydixiedarlin%27

--
David McNeely