I love Scotty videos. He's a little excited and just smart enough to give some solid advice when it comes to car repair and maintenance.
Here's how to fix car ac system with ac leak sealer. Do AC leak sealers really work? How to use ac leak sealer. The truth about ac repair with leak sealers. Car air conditioning explained and how to repair it. AC leak test. Air conditioning leak repair. Car advice. DIY car repair with Scotty Kilmer, an auto mechanic for the last 51 years.
I've used one of these AC re-charge and leak sealer things before. My results were OK enough not to worry about it.
Watch the video and decide what's best for you.