bro, i know what a DPF (diesel piss (urea-based) filter) is. Its easily maintained by regularly changing the piss juice. Again, any Jerry trying to run alt fuels will have installed other forms of filtration long before the DPF has a chance to clog, and theyre probably running a non DPF engine setup anyhow. are you an engineer or a naysayer who doesnt feel comfortable modifying a stock vehicle? (just joshin with ya bud)