Quote: if it is actually dead nuts zero then no. No continuity so no problem.
I can't say how long it will last. it really has a lot to do with the corosion inhibitors in the coolant.
Do you feel under 400mV is ok in a automobile system? That's what the auto trade magazines are saying. And I've seen that number in some instructions with new heater cores.
Have any of you mechanics out there got down to 0.00mV measured after a complete flush? Or how close? Or what about new cars? I'm not implying anything, just looking for actual observations and measurements.
