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jmatta · 02-06-2011, 04:53 AM

I replaced my coolant a year and a half ago when I installed the LN low temp t-stat. Admittedly, I didn't drain the front radiators; only opened up the system underneath, but proceeded with the manual bleeding system with great success. Drove the car around for two days with the valve open and added coolant in the AM, until it was no longer required. Regrettably, I should have also replaced the water pump at the same time, after reading all the possible failures with an older pump (mine is original, 9 years, 19k miles).

I see another coolant change coming in spring when I do the pump, which I question...can I save and reuse my present 1.5 year old coolant?

As the original poster questioned, hot spots can be deadly to these engines so heed JFP's advice.

02-06-2011, 04:53 AM	#4
jmatta Registered User Join Date: Nov 2007 Location: Chicago suburbs Posts: 1,675	I replaced my coolant a year and a half ago when I installed the LN low temp t-stat. Admittedly, I didn't drain the front radiators; only opened up the system underneath, but proceeded with the manual bleeding system with great success. Drove the car around for two days with the valve open and added coolant in the AM, until it was no longer required. Regrettably, I should have also replaced the water pump at the same time, after reading all the possible failures with an older pump (mine is original, 9 years, 19k miles). I see another coolant change coming in spring when I do the pump, which I question...can I save and reuse my present 1.5 year old coolant? As the original poster questioned, hot spots can be deadly to these engines so heed JFP's advice. __________________ JGM 2002 Boxster S 1973 911 Green FrankenMeanie PCA DE Instructor circa '95 Last edited by jmatta; 02-06-2011 at 05:14 AM.