Try RMI-25. It’s an automotive system cleaner that also acts as a water pump lubricant. Typical dosing is 8 oz for a system up to 5 gallons capacity . It claims to be non-acidic and can be left in a system indefinitely. I’ve used it my vehicles .

rmi25.com

Rob


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Cloves: Just an FYI- I had a similar regulator come with my a Protig 200. At first it seemed like especially when welding aluminum I couldn’t a hot enough puddle, and I went through argon like crazy. I also noticed that the torch gas sounded loud and the resultant “breeze” felt unusually stiff for 2...