Ry, an air-oil heat exchanger is what I am considering.  I have found several sources, but whatever I get, it will be something like the tencentlife kit.  A kit pleases me, because it means I don't have to do as much figuring (or get someone else to figure for me -- mostly already figured with the kit).  I just wondered about a way to keep the oil from flowing through the exchanger when cold.  Now I know, with the sandwich oil thermostat unit mentioned by a couple of other posters.  Thanks, DMc
---- Ry <rylincoln@GMAIL.COM> wrote:
> That's an interesting idea, I'd say over engineering or further complicating
> something that is more easily solved with an air/oil heat exchanger.  I will
> say that I've been very happy with the tencentlife external oil cooler kit,
> dropped my oil temps to remain around 210F  and pressure up to 40psi from
> 20psi at highway speeds.  Gotta make the engine last longer, without a doubt
> all other things being equal.
>
>
> -Ry
> http://www.google.com/profiles/rylincoln
>
>
> On Wed, Sep 15, 2010 at 10:13 AM, Dave Mcneely <mcneely4@cox.net> wrote:
>
> > on my "91 Volkswagen Vanagon GL Campmobile 2.1 waterboxer.
> >
> > It occurred to me that if the oil cooler works well, the oil might run too
> > cool when ambient temperatures are relatively low.  Is it possible (and
> > practical, reasonable) to install a valve in the feed line for the cooler
> > (and maybe another in the return line) that could be opened and closed
> > depending on need?  I realize that this would create an additional
> > complication -- that it would be another point for possible failure.  Or am
> > I just trying to over engineer something?  Anyone with experience with an
> > auxiliary oil cooler might know if I am trying to solve a problem that
> > doesn't exist.  Maybe the oil would have no problem running hot enough, even
> > with the extra cooling capacity.
> > Thanks, DMc
> > --
> > David McNeely
> >

--
David McNeely