A method and apparatus for dispersing an additive from an additive cartridge disposed in a housing of an oil filter is provided. The method including the steps of: using stagnation pressure to disperse the additive from the additive cartridge; and regulating a flow rate of the additive from the additive cartridge by restricting an inlet opening of an outlet path of the additive cartridge, wherein a portion of the outlet path is formed in a surface of a first piece of a two piece connector providing fluid communication between and an interior and an exterior of the additive cartridge.

Embodiments of the present disclosure provide a detergent dispenser device and methods of systems related thereto. Dispensers of the present disclosure comprise a container with side walls, a base, and a lid. The dispensers and methods of use described herein are operable to store and contain a cleaning agent, allow fluid to be applied to the agent to create a cleaning solution, and further facilitate drying and fluid management.

A fluid delivery system can include a tank holding the fluid to be delivered, a pump fluidly coupled to the tank, and a spray gun. The spray gun can include a handle, a winged extension member disposed to contact at least a portion of an operator's hand when the operator holds the spray gun by the handle, and a strap.