mans auto - Komentāri

First question: Is it OK to mix these products?
Answer: Yes. Most synthetic based fluids are miscible with mineral base oils, i.e. they will not form a phase separation or react negatively with the mineral base stock. There are exceptions- silicone fluids and some perfluoroethers come to mind, however the fluid supplier makes this very well known, and the cost of the fluids is such that they are tightly controlled in most facilities that use them.

Second question should be: Are there any drawbacks of mixing mineral and synthetic fluids?
Answer: Yes! Reduced service life for the mix, and more harmful oil breakdown products- the types which cause more sludging and corrosion. Mineral oil has less oxidation resistance than synthetic oil. The mineral oil will oxidize faster, and produce oxidation byproducts. These byproducts act as catalysts towards further oxidation, which will induce the synthetic product to start the oxidation degradation also. The result is a more shortened life than what you would expect for the full synthetic base. The byproducts formed when the synthetic oil breaks down are generally more corrosive than the mineral product.

The easy fix here is don’t mix the products. When ever you are switching from mineral base oil to synthetic base oil, be sure to thoroughly flush the old product out to ensure maximum service life for your new synthetic.