PeachParts Mercedes-Benz Forum - View Single Post - Non-toxic coolant to remedy leaky heater core.

JHZR2 · #14 03-01-2010, 12:04 PM

So youre having all these issues - how many radiators have you gone through?

Green coolant if changed properly should not cause a leaky heater core. Further, once you replaced it, the new one should not be leaking. That it is tells me there is another issue.

I would try to get a feel for the conductivity and electrochemical potential in the coolant by using a multimeter between your coolant and a known ground.

I bet you have a short or electrical issue somewhere causing corrosion. get to the bottom of the causes first, then go from there. Evans may be a smart idea overall regardless, I like the concept of low/no pressure in these older systems.