Fluid additive delivery systems

A fluid additive delivery system comprising 1) a fluid additive gel, 2) a container for the gel wherein the container has an end cap containing one or more of the openings to allow some of the fluid entering the housing from the device to flow into the container and out through one or more additional openings in a side wall of the container above the level of the gel inside the container 3) a housing for receiving the container, and 4) means for mounting the housing between a fluid filter and a fluid filter mounting surface of a device, wherein the housing containing flow passages for directing the fluid from the device past the container and through the filter back to the device resulting in one or more additive components in the gel released into the fluid.

A fluid additive delivery system comprising 1) a fluid additive gel, 2) a container for the gel wherein the container having one or more openings to allow contact of the fluid with the gel and 3) a canister type housing containing a plurality of containers for the gel mounted inside the canister and wherein the canister has inlet and outlet passages adjacent opposite ends for permitting fluid to flow through the housing and around the containers resulting in the release of one or more additive components of the gel into the fluid.