[M.D. Holloway]

For those of you who like to use aftermarket oil additives. No OEM or lubricant supplier endorses the use of aftermarket additives in fully-formulated products. A fully-formulated oil will balance the surface acting additives so that all will perform as expected. The addition of a supplemental additive package may impact this balance. Check out the designed experiment below that looked at various levels of additives and how they correspond to performance at various levels. If you mix certain chemistries you will have competing reactions that may lead to a very large decrease in performance.