1489 posts · Joined 2009. #2 · Apr 11, 2014. A 70-mile trip once a week will keep the DPF in good condition, as long as it isn't a 40mph 'economy run' sort of trip. If you will run at dual carriageway/motorway speeds, that will allow the DPF to regenerate when it wants to. If you stop doing the 70-mile trip and do short journeys only then Regular cleaning in combination with flushing can help avoid expensive repair costs including the replacement of the diesel particulate filter which can cost upwards of $3,000. Liquid Moly's DPF Cleaner fluid must be used in conjunction with DPF Cleaning Fluid (LM 5169), Spray Wand and attachments (LM 7945) and Pressurized Spray Gun (LM 7946). KE9Axl. 174 351 302 168 183 244 160 43 324

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