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  1. J

    How complete of a coolant flush is needed?

    It seemed like very few flakes/chunks came out, but the water was definitely cloudy. I’m going to run the car for the next year and then do another full coolant flush next fall and then maybe keep on a two year cycle after that.
  2. J

    How complete of a coolant flush is needed?

    Just a quick update. New filters arrived so I got around to doing one more flush of the distilled water and then replaced the coolant filter. I hooked up the rear heater core and I went ahead and put the GX-05 coolant in so I can finally stop worrying about parking outside in the cold...
  3. J

    How complete of a coolant flush is needed?

    After a few days of driving, the coolant filter seems to be keeping the fluid in the gas bottle a bit cleaner. Once my replacement filters arrive I'll do a full flush and see what comes out. The weather just got real cold here and having heat has been very nice! I am going to switch Zerex GX-05...
  4. J

    How complete of a coolant flush is needed?

    Any advice as to how to best purge? I’ve just been running the engine with the cap off until it stops burping air bubbles out.
  5. J

    How complete of a coolant flush is needed?

    It is specifically for coolant, it’s this wix filter: https://www.oreillyauto.com/detail/c/wix/filters/coolant-filter/b2f9e5157c1e/wix-coolant-filter/wix0/24070 I read about it on a Jeep forum. It seems like a common modification they do. I pulled the filter off today to check it. Already full...
  6. J

    How complete of a coolant flush is needed?

    Just got it done this afternoon! Here are the photos. I need to shorten the outlet line a few inches, but I wasn't sure where the filter manifold would end up. I was actually able to find a hole to bolt it to right where it is, so its nice and solid. I hooked up the front heater core as well and...
  7. J

    How complete of a coolant flush is needed?

    Wow, thanks jr1under! I had a completely incorrect understanding about the general flow through the rest of the engine. I think my plan to install the coolant filter on the 1 (inlet to heater core) line will work still though.
  8. J

    How complete of a coolant flush is needed?

    So I've got a few drives around town with subsequent hose flush cycles. The car is running well and heater lines are getting nice and hot, but lots of rust flakes and debris coming out of the block drain each time I flush. I've decided that I am going to hook up an inline coolant filter (Wix...
  9. J

    How complete of a coolant flush is needed?

    I totally agree and that's how I'm looking at it. Just hard to see that glass half full when your previously non-leaking radiator turned into a sprinkler! Car is put back together enough for test driving around the neighborhood yesterday. Everything is looking pretty good so far. I'm going to...
  10. J

    How complete of a coolant flush is needed?

    At this point, I've lost track of how much time I've burned on this project :D That said, getting to instrument cluster out would only require taking the panels around the steering wheel which are pretty straightforward and do not require dropping the whole dash. Having done it once now, I could...
  11. J

    How complete of a coolant flush is needed?

    I did actually pull and replace the water pump. I figured I may as well do so while the fan and radiator were out and it was easy to get to. The fins on the old pump were nice and solid, so I probably didn't need to replace it, but it seemed like good preventive maintenance.
  12. J

    How complete of a coolant flush is needed?

    After a bunch of googling, that appears to be a capped end of the vacuum line for the defrost actuator. Not sure why its hanging out there, but I think it doesn't impact anything inside the HVAC box. I'll just leave it alone.
  13. J

    How complete of a coolant flush is needed?

    Some more pictures of the fun I've been having this weekend. Leaking spot radiator (hard to see in the photo). I also yanked the instrument cluster out to re-solder the odometer (it was intermittently turning off). Water pump out, and new radiator in place.
  14. J

    How complete of a coolant flush is needed?

    Quick update, things got a little wild with this project. I did the citric acid flush a few days ago and a TON of crap came out of the system. Of course with my luck, a bunch of that crap was apparently keeping the radiator intact. Midway through flushing out the system, the radiator started...
  15. J

    How complete of a coolant flush is needed?

    Thanks. This is helpful. It sounds like some rust in the system isn’t enough the clog up the core. I’m think going to give it one more flush out with the citric acid and call it good. Do you actually directly flush the rear heater core by disconnecting the hoses?
  16. J

    How complete of a coolant flush is needed?

    I’ve actually wondered about this. It does seem like some people put inline coolant filters in their trucks. I’ll do some more research on this.
  17. J

    How complete of a coolant flush is needed?

    I don’t think I can say I’ve eliminated the rust. It must be coming from the engine block. I’m assuming that some amount of previous neglect (wrong coolant or too old?) caused the issue and it has accumulated on the walls of the pipes and hoses like plaque on an artery. That’s why I’m thinking...
  18. J

    How complete of a coolant flush is needed?

    Thanks! I've always really valued the information in forums like this (compared to black hole of facebook) but I'm usually on the non-expert side of the equation so I don't have much to add. Random anecdote: I'm pretty sure it was from this form, years ago, that I learned I could wrap the Expy...
  19. J

    How complete of a coolant flush is needed?

    Hey everyone, I've been lurking here for years to help keep my 2000 Expedition running and have always appreciated all the insight, but never had to cause to create an account. I've finally got a question that I can't answer with searching so here I am. TLDR: Lots of coolant flushing, still...

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