It’s not an unknown or untried product; it’s been out for years. Many merchants sell the product on a regular basis with some of their customers.
I am asking about a known product but untried by myself. I have not as yet come across the product in the field but may shortly as I have a new client whose x engineer uses it all the time, new, old or indifferent heating systems. I was asking as a professional, hoping for a professional answer.
Professional personnel always have to keep abreast of any products good or bad that others in the same field may use and be ready to respond.
When I was an apprentice my boss said that plastic guttering would never take off, we still used cast iron ogee and I wistfully looked at other housing sites using copper tube with Yorkshire fittings while I pumped dies. .......................He went bust!
Most of the cast iron guttering that I have replaced has been over 50 years old. Plastic is far cheaper and easy to fit from a ladder but is unlikely to last that long. However its advantage is the cost and ease of installation.
I can see no reason for any professional to fiddle with cheap and own brands. Not are they untested but they look unprofessional to any client who knows anything about heating. They can even ask the question "have you added some Fernox?"
There are no fully independent tests of heating additives!
Most people take the view that you largely get what you pay for!
Quote: There are no fully independent tests of heating additives! Unquote.
So how do you know how good they are without testing them yourself (even if over time) do you take their word for it, I trust not.
Taking experiences from someone else to come to some conclusion or to set up ones own testing procedure with a little more knowledge is a professional approach. I will never dismiss anything that is new(ish) or different from another product on the grounds that’s all we use mate, mankind would go nowhere.
I to have used / use the products you mentioned however keeping ones options open is the only healthy way to go forward, professionally speaking.
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