This was my son in law unit and he and the family moved to Alaska so I'm selling it now. It's the Prochem 405 installed in a Chevy express 2500 van Everything works as it should, 100 gal. waste tank, 200 feet vacuum line and pressure line wand some chemicals. Good heat and pressure and the van has been taken care of and is in excellent condition. Transmission was rebuilt less then 15,000 mile ago, and the engine the 4.3 v6 has had a total tune up and runs without burning oil.