Thanks again Neil.
I got some Evapo-Rust from the parts store for descaling the individual parts and will order in some Thermocure. I'm glad to read that the chemicals are harmless for all metals, aluminum, copper, brass.
They talk about rust and scale but no mention of mineral deposits or am I missing something ? not trying to be an a-- just trying to clarify for the OP
TJP. ... 'scale' is a mineral deposit..
.. In my case it's a blue/green crunchy crud built up on my aluminum parts.
The glycol in anti-freeze never wears out unless it's been overheated. The corrosion inhibitors simply go away with time. With the price of anti-freeze being what it is, I'm starting to drain it every five years or so, filter it, and add this schmoo or something similar.
Cooling Sytem Corrosion Inhibitor yes, it seems the inhibitors decay and that leaves the ethylene glycol at risk of reacting with the metals.. if you leave the coolant in your engine too many years..
Here is the article I found describing how 'uninhibited ethylene glycol' in a cooling systems can degrade and contribute to corrosion and scaling..
https://www.boydcorp.com/blog/avoiding-galvanic-corrosion.htmlI have to track and refresh my coolants more often.
Cheers,
- Art
