Cooling system electrolysis test

[TheJackal]

Hi,
Did a bit of searching on this one but not even the service manual has any information...

What is acceptable level for a cooling system electrolysis test? Someone told me a while back but I forgot, and googling it brings up values all the way from 0.10v to 0.5v as all being the limit. My test revealed 0.125v.

 

[Heavymentill]

Ground the positive probe to the radiator, insert the negative probe and a reading of 0.2volts or less is good. 0.5 volts or more and the system should be flushed to prevent corrosion.