There are conflicting opinions regarding lubrication and aftermarket additives. Countless testing have been conducted to determine the efficacy of using additives with conflicting results supporting both sides. The only truth that has been established is that if the properly-formulated lubricant has been selected in the beginning, there is little to no benefit to using aftermarket additives. The challenge lies on finding high-quality lubricant packages.
Oil, grease and other lubrication products are formulated with a selection of additives and base oil properties that are carefully set in balance. A slight change in this formulation has the potential to be detrimental to the performance of the lubricant. It is important to remember that more additive is not always better.
There are plenty of cases wherein no benefit is attained even as more additive is added to the lubricant. In some cases, the performance of the lubricant decreases and the added expense of the additives only cause further problems. There are also cases wherein there is no improvement in performance but the service life of the lubricant is extended. A good reason to use an aftermarket additives is for the reconditioning of lubricant that has been stripped of its additives.
Upping the percentage of a specific additive may improve one property the lubricant while at the same time degrade another. The overall quality of the lubricant can be affected if the concentration of certain additives become unbalanced. Remember that certain additives compete with each other for the same space on the surface to be lubricated. Lubrication companies spend huge amount of money and effort into perfecting their formulations so that their clients do not have to worry about using more additives.