Secondly, there are many reasons to be using oil analysis and the changing formulations is another. If you are already sampling and testing your oil, great! It is more important now than ever before. Be diligent about making sure every change is sampled so that you can establish the baseline performance. This way, as engine oils do change there is an established trend to help you recognize any change in performance. If you aren't already sampling you should consider starting now. My recommendation would be Signum Oil analysis. Signum, along with your choice of Mobil Delvac will ensure the greatest performance and engine life. Questions on how Mobil and Rex can help your fleet?
Also known as: Rex Oil Company