Originally posted by stickyjazz:
I think Steve is meaning that as long as the concentration is in the ballpark, then the cooling system will do it's job for most conditions. The correct concentration really matters at extreme temps. The correct operation of the fans, thermostat, sensor and pump would have the most affect on the operation of the cooling system.
How do you know the concentration is in the ballpark if you don't test it?
A $5 tester will definitely let you know if the concentration is in the ballpark. 
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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