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Diesel gelling
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<blockquote data-quote="Rmc" data-source="post: 1779234" data-attributes="member: 39072"><p>Def System is designed to freeze and thaw. Has a built in heater in the tank to thaw out def after it is frozen. Def tank has surplus capacity for expansion of frozen def. Lines are built to withstand frozen def.</p><p>Def isn't constantly being used it is a on demand system. Def is only added when needed to increase temperatures to insure a clean burn. Def only use is to increase oxygen to ensure a complete burn before exhaust exists. Doe's absolutely nothing to increase power or to increase efficiency in the combustion chamber. It's only purpose is to remove "contaminants " from the exhaust before it exists the tail pipe.</p><p></p><p>Best time to purchase fuel filters is immediately after you install your last set. </p><p>In some areas parts stores have a spring farm filter sale . Where you can get filters at 30-50 percent of retail. If so I would purchase an entire year worth of filters at this time.</p><p>Also look at getting fleet pricing on filters if you have a large number filters.</p><p>I always change both fuel filters at once. Closest filter to fuel tank will always be higher micron spec. Closest to engine will be lower micron. Ie first filter will filter to 10 microns second filter will filter to 2 micron.</p><p>As emission requirements have increased fuel filter requirements have increased. Fuel rail pressures have increased and injector orifices are becoming smaller and smaller to insure fuel entering the combustion chamber is aerosolized to ensure a more complete combustion of fuel.</p><p>Was told in training by a filter manufacturer rep that fuel filters required on newer diesel engines would completely plug up in minutes by culinary water. That is also why they are stressing not to prefill fuel filters prior to installation. And if you insist on pre filling them do it from the outside in because if you dump it in the center you are dumping unfiltered fuel in the system. </p><p>A human hair is approximately 50 microns so something a small as 1/25 the diameter of a human hair can plug up newer diesel filters. And many gasoline vehicles are completely doing away with replaceable fuel filters</p></blockquote><p></p>
[QUOTE="Rmc, post: 1779234, member: 39072"] Def System is designed to freeze and thaw. Has a built in heater in the tank to thaw out def after it is frozen. Def tank has surplus capacity for expansion of frozen def. Lines are built to withstand frozen def. Def isn’t constantly being used it is a on demand system. Def is only added when needed to increase temperatures to insure a clean burn. Def only use is to increase oxygen to ensure a complete burn before exhaust exists. Doe’s absolutely nothing to increase power or to increase efficiency in the combustion chamber. It’s only purpose is to remove “contaminants “ from the exhaust before it exists the tail pipe. Best time to purchase fuel filters is immediately after you install your last set. In some areas parts stores have a spring farm filter sale . Where you can get filters at 30-50 percent of retail. If so I would purchase an entire year worth of filters at this time. Also look at getting fleet pricing on filters if you have a large number filters. I always change both fuel filters at once. Closest filter to fuel tank will always be higher micron spec. Closest to engine will be lower micron. Ie first filter will filter to 10 microns second filter will filter to 2 micron. As emission requirements have increased fuel filter requirements have increased. Fuel rail pressures have increased and injector orifices are becoming smaller and smaller to insure fuel entering the combustion chamber is aerosolized to ensure a more complete combustion of fuel. Was told in training by a filter manufacturer rep that fuel filters required on newer diesel engines would completely plug up in minutes by culinary water. That is also why they are stressing not to prefill fuel filters prior to installation. And if you insist on pre filling them do it from the outside in because if you dump it in the center you are dumping unfiltered fuel in the system. A human hair is approximately 50 microns so something a small as 1/25 the diameter of a human hair can plug up newer diesel filters. And many gasoline vehicles are completely doing away with replaceable fuel filters [/QUOTE]
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