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patkeefe patkeefe is offline
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Join Date: Apr 2004
Location: Ringwood, NJ
Posts: 2,850
Take it out, disassemble it, and put the thermostat potion in a pot of hot oil. It should open around 170F. If not, you need a new stat. I just changed mine due to bypass concerns, although the stat still worked.

I think the Mocal units have no pressure bypass, which is the main difference. Also, different line sizes.
Patrick E. Keefe
78 SC
01 Boxster
Old 10-04-2007, 01:19 PM
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