From what I understand there are a couple different ways they do the regen. The most common, and I think the cheapest, is injecting extra fuel in the engine on the exhaust stroke. This adds fuel to the oil. Dodge/Cummins, GM and Ford are set up this way now. Supposedly some of them are changing designs in the future to a better but more expensive setup. There are several options including post engine fuel induction, electrical heating of the DPF ect. I think the higher the operating exhaust temps are the less the regen process needs to run (higher temps help burn off the carbon). Therefore the more you idle, city drive or baby the engine the more often it will need to regen. No matter what way you go the regen will use extra fuel (even the electrical takes fuel). The ash is what clogs the filters over time which is why the CJ oils are needed as they are a lower ash content oil than the pre-2007 CI oils. Sulfur also goofs up the regen process which is why they've gone to low sulfur fuels for on-road. Now with off-road engines with DPF's they'll need low sulfur fuel too.
When these modern tractors are "antiques" they will be really hard to work on.
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Today's Featured Article - Piston Ring Removal and Replacement - by Chris Pratt. Piston Ring Removal and Replacement - Replacing rings is a fairly easy process to stretch the engines usability between major rebuilds and cut down on that blue smoke and high oil consumption. Frequently, replacing only the rings is not advisable because by the time you do the teardown and measurement of the components, the pistons are often beyond the manufacturers specification or something else you find will signify the need for a major rebu
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