Developed by Ron McElroy, the creator of Magna-Guard Oil Filter Magnets, Fluid Rx Diagnostics allows industry professionals and consumers alike to determine when fluid services are needed based on the true condition of automotive lubricants.
Beginning in 2002, in conjunction with SGS Herguth Laboratories, McElroy began offering a low-cost, easy to perform, and highly accurate test that mirrored laboratory results. This simple yet effective one-drop test was made to act as a means in which service writers and customer service personnel could interact with customers without bias or opinion. For over a decade, it has been a straightforward method of communicating the vehicle’s actual fluid ...