Hi all been running Bluefin now for over a month with no problems at all no DPF lights even though i do short journeys at the moment.I have found that the millers additive seems to help but i used this post Bluefin. I have had two DPF lighs in 8 months but none since millers and none since Bluefin, so if your at the will i, or will i not stage i would go for it its a totaly different drive .