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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

       
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Old 02-25-2008, 05:05 PM   #31 (permalink)
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I dumped some in a few winters ago. I put it in the wrong tank, and instead of about 25% concentration it was about 75%.

Warmed up it ran great, but cold it romped badly. It had a lot of trouble idling and idling down. I blame this on the viscosity.
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Old 02-25-2008, 08:47 PM   #32 (permalink)
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yep makes it tough to get through the fuel filter
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Old 02-26-2008, 10:27 AM   #33 (permalink)
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no dont get me wrong i am usin used motor oil,,,have access to a lot of it and am wondering about just cutting it with kero instead of using diesel as i have been,,,i just add a lil veggie for the smell,,,it the exhaust doesnt smell bad if i use a lil veggie,,,but the most i use is is used motor oil,,

,so if i used umo and kero it would take care of the drying i 'd think,,,jus wanna try it
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Old 02-26-2008, 10:38 AM   #34 (permalink)
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yep makes it tough to get through the fuel filter
if i was runing umo or anything but diesel through my diesel filter id wrap the filter with soft bendable copper in the winer especialy. wrap it tight and cut your heater hoses and insert a Y or T fitting out the engine to your copper coil and back to the water pump with a 2nd T fitting . if you start on diesel and let it warm up and then switch tanks that will give you thicker fuel a warm up and keep it from cloging your one and only filter. i do it on my waist oils filter. works great! im planing on doing the same thing with my diesel filter. starting on diesel then when my engine get to about freezing temp swithing to my rear stock tank and runing B100. then when my waist oils tank is up to a hot temp switch to waist oils. then when its time to turm off end up back with diesel! i just need to start brewing bio!
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Old 02-26-2008, 12:00 PM   #35 (permalink)
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if i was runing umo or anything but diesel through my diesel filter id wrap the filter with soft bendable copper in the winer especialy. wrap it tight and cut your heater hoses and insert a Y or T fitting out the engine to your copper coil and back to the water pump with a 2nd T fitting . if you start on diesel and let it warm up and then switch tanks that will give you thicker fuel a warm up and keep it from cloging your one and only filter. i do it on my waist oils filter. works great! im planing on doing the same thing with my diesel filter. starting on diesel then when my engine get to about freezing temp swithing to my rear stock tank and runing B100. then when my waist oils tank is up to a hot temp switch to waist oils. then when its time to turm off end up back with diesel! i just need to start brewing bio!

There are much more effective heat exchangers available for liquids than that. I'm not sure you'd raise the temp more than 10 or 20 degrees. I'd want it raised over a hundred or so on cold days to run UMO or veggie.
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Old 02-26-2008, 12:57 PM   #36 (permalink)
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skunk yes your plan works
mgraveman you are also correct... heat exchanger is much more efficient and less headache to install. If the fuel temp is too low and the viscosity is higher then its tougher to get it through your filter. Youll feel like the filter is clogged. If you havent experienced that then good for you. When the ambient temperature(regular outside temperature) is up its not such a big deal. Have run 100% wmo in the summer to test. It works but I still cut it so I am "officially" using diesel and "adding " wmo if you get my drift
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Old 02-26-2008, 05:44 PM   #37 (permalink)
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skunk yes your plan works
mgraveman you are also correct... heat exchanger is much more efficient and less headache to install. If the fuel temp is too low and the viscosity is higher then its tougher to get it through your filter. Youll feel like the filter is clogged. If you havent experienced that then good for you. When the ambient temperature(regular outside temperature) is up its not such a big deal. Have run 100% wmo in the summer to test. It works but I still cut it so I am "officially" using diesel and "adding " wmo if you get my drift
oh--your using a high concentration---of fuel "additive" ,,,,,works for me..
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Old 03-30-2008, 03:42 AM   #38 (permalink)
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I have a 2001 F-250 7.3L that has 162k miles. Since the warranty expired, I've been using used oils(motor, ATF, gear) in my fuel tank. I have an endless supply and I cut it in at about a 15-25% used oils and the rest #2 diesel. I vary the ratio depending on how clean the used oils are and it's often higher if I'm pouring in ATF. I always let the used oil settle several days before I filter it. I change my fuel filter every 15-20k and I haven't had any problems at all.
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