On Sun, 22 May 2011 19:54:55 -0700, Rocket J Squirrel
<camping.elliott@GMAIL.COM> wrote:

>Now I'm thinking I want to install a temperature-operated switch and a
>fan to force air through the cooler when the van is working hard but not
>moving very fast. Like climbing up long, steep desert grades at 4,000
>rpm in first gear.
>
>Not sure where to put a thermal switch or what to use.

The oil cooler kit that Chris Corkins offers for the syncro includes a
thermo switch and fan, to aid cooling at slow speeds, so ask him about
obtaining these parts to add to the basic oil cooler you just bought from
him.