Join Date: Aug 2009
Location: Washington, the state
120,000 km is about 75,000 miles. Maybe they dropped a zero.
Coolant doesn't wear out. The corrosion inhibitors become depleted. 24 months is a good schedule for the ordinary coolant, and 5 years for long-life coolant. A simple test when you can get to the radiator cap is with a voltmeter. Put one probe into the coolant in the radiator neck, not touching metal. Put the other probe on the battery negative post, and read volts DC. 0.3 VDC or less shows that the corrosion inhibitors are still OK. Greater than 0.3 VDC shows that the inhibitors are gone and your system has become a galvanic cell--a poor battery--and some of the alloys are corroding.
"Older people who are reasonable, good-tempered, and gracious will bear aging well. Those who are mean-spirited and irritable will be unhappy at every period of their lives.
"Let each of use properly whatever strengths he has and strive to use them well. If he does this, he will never find himself lacking."
Marcus Tullius Cicero