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 - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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