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I installed a Wahler 160* thermostat this weekend (in addition to replacing the water pump and changing the coolant). The coolant is now at ~82*C when fully warmed up and the car is driven a moderate speeds. Prior to this change, the coolant was at ~88*C under the same conditions. Yeah, I know I changed the coolant in addition to switching to a low temp tstat; this was hardly a scientific experiment. But there's little doubt that the engine is running a bit (~10*F) cooler, and I doubt the coolant is responsible.
BTW, used the AirLift to fill the system. What a great product!!!! Took about 90 seconds to get the system to 25 lbs. vacuum; about 3-4 minutes to fill the system, and that included adding more coolant mix to the 5 gal bucket I was using. Worth every penny +++++.
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2000 Boxster S, 6 speed, Sport Package, Litronics, LED tail lights, LNE IMS-B, OBC, Skybreaker wind deflector, Arctic Silver/Graphite Grey
Last edited by kjc2050; 11-10-2013 at 07:14 AM.
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