Duramax, warm up time
I'm considering a 2015 Duramax that a friend is selling that is pristine and well maintained. He drives a lot, it already has 115,000 miles on it. I on the other hand have a short commute only 6 m...
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With the highway driving you describe added to the mix the DPF shouldn't be a problem for you. Regen frequency is totally dependent upon soot loading and your driving conditions will determine the miles between regens. People doing a large amount of stop and go driving, especially with fairly hard acceleration on starts, often report regen events between 200 and 250 miles while under optimal conditions (the sweet spot while towing where exhaust heat is high enough that some soot reduction will occur at times between regens) you can go over 700 miles.
If you think of the older diesels and the conditions that caused visible "smoke" that is what you want to avoid when possible because the DPF is now capturing what used to go out the exhaust and that is what loads it more quickly. Diesels are always producing some particulate matter but some conditions greatly increase the level and will result in more frequent regens.
Several European nations have been looking seriously at particulate matter from the current crop of direct injected gas engines which do produce and emit quite a bit of particulate matter. It is likely that a GPF (gas particulate filter) may be in the future of future gas engines unless the electric era arrives prior to more regulations. The chrome exhausts on my Cadillac and Corvette require regular cleaning to remove the particulate buildup, it isn't nearly at the level of older diesels but it is readily apparent.
If you think of the older diesels and the conditions that caused visible "smoke" that is what you want to avoid when possible because the DPF is now capturing what used to go out the exhaust and that is what loads it more quickly. Diesels are always producing some particulate matter but some conditions greatly increase the level and will result in more frequent regens.
Several European nations have been looking seriously at particulate matter from the current crop of direct injected gas engines which do produce and emit quite a bit of particulate matter. It is likely that a GPF (gas particulate filter) may be in the future of future gas engines unless the electric era arrives prior to more regulations. The chrome exhausts on my Cadillac and Corvette require regular cleaning to remove the particulate buildup, it isn't nearly at the level of older diesels but it is readily apparent.
