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Another good reason to consult the TMs! To know your filter is assembled with the correct parts in the correct order. :wink:

All glycols produce acids in the presence of air (oxidants). The acids can reduce pH and cause corrosion. When the system pH drops below 7, rust will form on any ferrous metal, and nonferrous metals start to corrode. For HVAC applications, glycols are formulated with passivating and buffering...

You can make all the personal stickies you want. This info should be in the Deuce WIKI/FAQ You can always write the info on paper and put it in your truck(or wallet) Just searching for it, is not hard either, and it's good practice.