2L Black Aluminum Oil Catch Can2L Black Aluminum Oil Catch Can Installation method: oil breather pot is installed on the original car's exhaust pipe, collect waste oil to protect the engine, reduce carbon in the engine compartment to extend engine life. Note: Before installation, be sure to choose a good installation location, because the engine will emit heat while working, so try to install the oil breather pot farther away from the heat source in order to facilitate the future