Hmmm..... .  It won't keep your engine from overheating.  It will only keep
it from warming up to proper operating temperature.  The overheating on a
long run uphill is not because the thermostat is not open, but rather is
because the combination of cooling devices (radiator, oil cooler, the long
pipes underneath which also provide cooling) can't shed heat adequately.
Try turning on the heater to its hottest setting.  But, you may just have
to rest the vehicle for a time if possible.

mcneely

On Tue, Oct 30, 2018 at 6:10 PM Dan N <dn92610@gmail.com> wrote:

> I like the Mahle 80° better than recommended 87°... it will open a bit
> earlier. I think it helps on a long run up hill...
>
>  someone may disagree... yeah the purist...
>