Direct Inject ULTIMATE 3 in 1

Product seems to work as advertised. There is also excellent customer service. I had an issue with a previous shipment, and it was resolved quickly. Highly recommend as a leak sealer and as a maintenance product.

The first one ruptured almost immediately. I had to purchase a second and using the same procedure it injected without exploding. I emailed about this with no response.

Instructions could use a little help on making sure thelow side is connected first then the C02 shot. With a warning of the tube can explode if not properly connected. You should also include after 60 minutes to test the unit the next day.I had major core leak where the entire thing would ice over blocking all air flow. After using the leak stop, and waiting a day the leaks were plugs. I can not get the 1500 sqft 3 ton system down to 66 degrees inside in Dallas, TX. Saved me from an entire system repair estimates from $16000. to $6900. USD Not a bad trade for 200 bucks. It was two hundred with the purchase of two air guns and 4 leak stop tubes.