What are the warranty conditions on your replacement DPF’s? Posted by Norie on February 16, 2017 As of 13/02/2017 DCL RoadWarrior – 1year / Unlimited Mileage ESW Skyline – 2 year / Unlimited Mileage CDTi DuraFit – 2 year / Unlimited Mileage MaxFilter – Lifetime / Unlimited Mileage