R134a Replacement with Stop Leak 4 Cans Total with Piercing Valve Top for AC Recharging

APPROVED BY THE US EPA IN ALL 50 STATES! This product includes stop leak to lubricate the Orings. DO NOT USE IN AMMONIA SYSTEMS! DO NOT PULL A VACUUM ON THE A/C SYSTEM. If you plan to pull a vacuum or are charging a larger system or dual air system such as on a van suburban or SUV use Enviro-Safe Industrial R134a Replacement refrigerant. Enviro-Safe R134a Replacement with Dye can be used in all R134a applications including pre-1994 automotives that have complied with the US EPA Snap regulation. Bring your a/c performance back to the original cold air! This is the original Enviro-Safe Refrigerant that we first introduced over 20 years ago. One 8 ounce can is equivalent to 21+ ounces of 134a. Operates at lower head pressure If you use the R134a Replacement with Dye you cannot pull a vacuum because the product comes in a less expensive can to keep costs lower for the customer. If you are charging something like a dual air system in an SUV you need to use the Industrial 134a replacem