So what's the benefit of RedTek over 'regular' refrigerant?

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On Jul 11, 2011, at 9:33 AM, Douglass Collins <collinsmedicus@HOTMAIL.COM> wrote:

> Last week I completed my rebuild of the A/C system; new hoses, Expansion valve and Red Tek with all new o rings. Better than expected and makes my 88 Wolfsburg easy to drive in the summer heat of the California Central Valley. Definitely worth the time and effort.
> Doug
> Fresno, CA