Many positive testimonials and a few that say it does nothing. I use PS for the lubricity, water dispersal, anti algae properties. the cetane and fuel mileage claim are just a bonus. I see no MPG difference or engine running characteristics using it. I have used other brands over the years and have never seen any performance or MPG enhancements. I'm ok with that but since I use an additive anyways, I am contemplating this product. I will be using it in VW EA288 common rail with secondary urea treatment and DPF filter. It would be helpful if someone with this engine actually has any real world experience. In the meantime I have nearly full jugs of PS summer and winter on my shelf.
