I wanted to share the difference I have seen with the three diesel engines that I added CamGaurd Heavy Duty to. I have used a variety of oil additives for years with never being able to see any difference in my oil analysis. I recently received my first oil analysis on my 5.9 Cummins. All wear metals were cut in half. In addition, all three engines have shown a noticeable change in mileage.
Thank you for producing an oil additive that actually makes a big difference.