Abstract: The invention provides a method of lubricating containing: (a) employing a first functional fluid, (b) adding or contacting the first functional fluid with a controlled release gel wherein the controlled release gel has the desired additives to be released imparting the desired properties into the first functional fluid which is for lubricating a mechanical device; and/or adding a delivery system with the desired additives for a second functional fluid; (c) releasing the desired additives from the delivery system into the first functional fluid resulting in the first functional fluid changing into a second functional fluid, with the proviso that the second functional fluid is different from the first functional fluid.

Abstract: An additive composition comprises (A) an additive comprising a nitrogen-containing detergent, a fatty acid based friction modifier, or a mixture thereof and (B) a solid organic matrix material where the additive composition is a solid that melts in the range of about 25 to about 200° C. A method to enhance performance of a functional fluid, especially a fuel composition or power transmission fluid of a vehicle powered by an internal combustion engine, comprises adding a performance-enhancing amount of the additive composition to the functional fluid.

Abstract: In accordance with the present invention, it has been discovered that additive gels can provide additives to a functional fluid over time. In accordance with the present invention it has been discovered that an additive gel comprising i.) at least two additives selected from the group comprising detergents, dispersants, acids, bases, over based detergent, succinated polyolefins or mixtures thereof wherein the selected additives when combined form a gel; ii.