993 auxilary oil cooler
#2
Three Wheelin'
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I installed one when I added a few ponies to the car a couple of years ago. That was the only reason I did it; I wasn't having any cooling issues. Still don't.
#3
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I have an addional cooler (Cargraphic unit). It keeps my oil temps much cooler. I run 180 °F or cooler even after 30 minutes on the track at temps of 90 °F to 110 °F. I also have better airflow as I've got the EVO front and the fans are removed from the coolers.. Fan removal is not soething you want to do to a street car, but helps a lot on the track.
#5
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If in doubt about over cooling, just plumb in a thermostat:
http://www.perma-cool.com/Catalog/Cat_page14.html
http://www.perma-cool.com/Catalog/Cat_page14.html
#6
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There is already a thermostat in the line to the primary cooler. The aux coolers attach downstream of that. The only downside to an additional cooler is the expense and effort of installing it.