X AUTOHAUX Oil and Dye Injectors Kit 30ml/1 Oz Hand Push Compressor Manual AC Oil Dye Injector with Quick Coupler 1/4 SAE Connector Car HVAC Compressor Oil Dye Injector Refrigerant Tool

The injector worked well, but my A/C system was empty. I’m not sure if this would would for a system that has any pressure. I would think that a pressurized system may need an injector that’s made of metal.

Easy to use for dye application

I bought this tool to use on a pressurized ac system and found out its only good for an empty ac system.Ill just put it in box for empty ac jobs.

The media could not be loaded. The first one that i ordered it lasted me 2 days ,This one in the video I’m taking care of it and it starting to breakThe tools it’s very useful and easy I like it but Not durable

I bought this to inject dye to find a leak. It did that on both parts... injected dye and helped locate leak (high pressure side schrader valve). For the price it was a good deal just to get the one usage out of it, but it seems like it'll last for more future usages so that's a big plus. Definitely satisfied with the purchase.

maybe I didnt use it correct but I could not force the contents into the low pressure line

this unit cannot be used on the low pressure side, (and certainly not on the high side!) it slams the injector piston out. I had concerns about it blowing apart. If you have a gauge set, just add oil (use a simple cheap pet supply syringe) or leak dye into the LP hose and let it be pulled in during recharge. This thing is worthless to me.

Smooth injection. I use it for HVAC dye.