Hi.

When i checked the coolant with that method,i read 0.7V at the voltmeter,but during 10 second after,the voltage,gradually,went down to 0.1V.
Should it needs to stay on 0.7V in order to identified as a problem?
Since in my case it didn't stay on 0.7V,it was 0.7v for 2 seconds and started to decrease,gradually, to 0.1V?
What is it mean?
Thanks in advance.