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I am not sure it is a "multitude" of reasons, but if there is a required sequence of shutter, thermostat, fan clutch, that would be a good enough one. Diesels like heat, but if the fan stays engaged, or regularly cycles, that drag will far outweigh any benefits. As an engine builder and...

Your point is valid, they actually changed from the 200 to the 190 with the changes in 2013, they must have had a reason. I probably will still try it though and see. More to come!

I posted this in another forum with no bites, wondering if anyone here had Up to 2013, the 6.7 had a 200 degree thermostat then went to 190. Trying to chase a little more mileage and considering the 200. I heard through internet chatter that the clutch fan may engage at 205, but haven't...

Had mine done today TSB 18-030-14 Rev A - Long list of things addressed, was mostly interested in transmission, DEF and cold idle performance. RRT 14-011 - BCM module, tech said my fuel heater was not engaged as well. Pretty amazing as I made it through a Nebraska winter! RRT 13-071 - Lots of radio...

I found some stuff https://www.turbodieselregister.com/threads/244111-68RFE-Shift-flare-question-for-trans-guy?highlight=flare At least in THAT thread, he is describing a TC lock unlock, makes perfect sense in the upper gears. I have seen it in Ford 7.3s too and you can easily get rid of it...

Very eager and honestly want to know why you say it, because I am not an enthusiast, I am a builder and ECM programmer (performance Ford gas motors for the ECM work) and that goes against any performance application I have ever seen in 25+ years of doing performance work Walk me through it, a...

You got it right. The least slip the better, and with more throttle should come even more pressure to keep things strong. Hits the rest of the driveline harder, and grandma may not like it, but it's better for the hardest and most expensive thing to fix. That goes for torque converter...

Anyone have this flash done? Seem like the transmission and EB got better? I am going in to have it done soon, but can't seem to get my schedule together, standard LOL