What do you mean old? Still being done today, check any diesel truck forum and youll see. Works just like mentioned below, NOX for diesels, and when used without putting your foot in it, can increase mileage.(Although, I dont see it being cost pronibitive) Dont know about the new ones with regen, wont help too much as regen cycles are computer controlled, at least in the limited experience Ive had with regen trucks.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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