If you read tencentlife's ad you will find that it is
thermostatically controlled

1. Oil Cooler Kit: all kits include Mocal sandwich plate adapter with
built-in thermostatic control valve, efficient stacked-plate cooler,
pre-built Parker hoses with spin-on fittings, custom support
structure, engine intake air ducting, and all hardware. All oil
cooler kits install easily with basic tools, in base of right D-
pillar. Detailed instructions are provided.

Different kits are available depending on year/model:
 >For 2.1 liter 2WD vans: $350.
 >For 1.9 2WD vans: $420.
 >For Syncro: $550. Syncro kit includes a built-in thermostatically
controlled SPAL fan to keep your oil cool during low-speed offroading
excursions.

Oil Cooler Kit is strongly recommended to get the best performance
and longest service life from one of my rebuilds. I will increase
your warranty period from one year to two years when you buy and
install the oil cooler at the same time as your new engine.

alistair

On 15-Sep-10, at 9:35 AM, Dave Mcneely wrote:

Mark, the oil lines to the air cooled coils, for example a
TenCentLife oil cooler.    But please tell me more about the option
you mentioned.  Might be less prone to develop leaks, without oil
lines and connections?  DMc

---- VWBrain@aol.com wrote:
>
> In a message dated 9/15/2010 11:23:38 A.M. Eastern Daylight Time,
> mcneely4@COX.NET writes:
>
> 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
>
>
>
> hey David   what feed lines? the coolant ones?? seems like a lot  of
> trouble to use another water cooled oil cooler.  They make a
> sandwich  plate that
> allows you to hook up oil lines for a remote oil cooler that goes
> above the
> oil filter. this is the easiest way to install one and works very
> well on
> the type 4 motors we have put them on. I have never put one on a
> vannie
> later  mark d

--
David McNeely