[pneall]

Need some advice please.

Started out looking for stray current and just happened to check voltage from fluid in radiator to earth. Got a reading of 0.5 volts.

This is with battery disconnected.

As I have a new alloy radiator this is a great concern.

Everything is alloy ie block heads radiator with only dissimilar metals being top radiator pipe (Stainless) temp probes (brass)
water pump impeller (cast iron?).

Drained out radiator and flushed a few times, then just put water in . Re tested and got 0.01 volts.

What is permissable voltage??

The coolant was manufacturers approved .

Any one had this problem before? Know how to fix it?


Phil.