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AC Stop Leak | FAQ

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Will it clog the recovery unit or any other A/C components?

No. Red Angel is completely safe for shop equipment and A/C units.

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How does it work?

Red Angel is inert until it mixes with R-12 or R-134a. Red Angel is activated by air flow at the site of the leak - forming a chemical weld and repairing the system.

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How large of a leak does it repair?

Red Angel will seal leaks in A/C systems that can hold 5 inches of vacuum for 25 minutes or 15 inches of vacuum for 5 minutes.

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Does it seal evaporator leaks?

Yes. It also seals leaks in connection hoses, gaskets, o-rings & condensers.

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How much do I use?

Use one bottle (2 oz.) for all automotive A/C systems (up to 5 lb. system). When adding
Red Angel to an evacuated system, substitute 2 oz. Red Angel for 2 oz. of oil. When a vehicle has a slow leak & maintains a partial charge, add 2 oz. of Red Angel along with the necessary amount of R-12 or R-134a (see service manual).

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How long will it stay in the system?

If there are no leaks in the system, Red Angel remains as a liquid lubricant in the system. It can stay in the system until the oil is reclaimed.

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What happens if I recycle the refrigerant?

Red Angel is removed from the A/C system with the refrigerant. It is then separated from the refrigerant with the reclaimed oil.

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Can I install it without an oil injector?

No, you must use an oil injector.

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