Review on 🔍 FJC FJC2724 1 Pack Oil/Dye Injector (R-1234Yf): Efficient Solution for Oil and Dye Injection by Justin Boisvert

Well-made tool, easy to use, after pouring oil or paint into the cylinder and deflating, just attach the coupler to the low-pressure side of the installation on the vehicle, start the engine and turn on the air conditioner, then rotate the outer cylinder of the tool to spray paint or oil. This oil/dye injector only works on vehicles with the new 1234yf refrigerant system, it is not suitable for R134 or R12 systems. I use it to put paint in a 2019 Lexus ES350 air conditioner to find a leak. Great tool!