Built in disposable dispenser in a shelf saver cap It features an ultraviolet dye that you allow to run through your car's system for about 15 minutes. The super tech premium automotive refrigerant improves durability, lubricates, and improves performance of your car’s a/c unit A/c pro high mileage r134a replenish a/c systems with lost refrigerant Contains leak sealer and uv dye additives help seal leaks found in rubber components and identify larger leaks in the system
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