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  1. 6.0 Motor problems
    Purchased the truck 2 weeks ago with 265,xxx, abs light on, I noticed the speedometer ‘bouncing’ approximately 5-15 mph within actual speed. A few days later the truck hit 266,xxx. 1) The speedometer stopped reading, miles stopped going up, lack of power seems to start after I get up to speed...
  2. 6.0L Problems Forum
    So I just did my 2nd oil cooler backflush, and also replaced the thermostat and reservoir/degas bottle. There was a bunch of crud stuck up top in the reservoir and as the antifreeze expanded it would rise into the crud and run it through the system 😬. Anyway, flushed it out, replaced the coolant...
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