The key factor to a diffuser's function relies on the manipulation of air pressure. Air passing under the car is subjected to a phenomenon called the Venturi effect. In short, this happens when ...

Car essential-oil diffuser price The best car essential-oil diffuser will cost $13-$25. The price will vary depending on the item’s features, additions and make.

The diffuser itself is part of an aerodynamic package that works with the underbody and the back half of the car’s body. Notice the location of the exhaust outlets: They’re placed where they ...