Results 1 to 16 of 16

Thread: Brown, dirty looking engine coolant?

  1. #1
    Join Date
    Jun 2009
    Location
    Sudbury, Ontario
    Posts
    92
    Time Online: 2 Hrs 45 Mins 24 Secs
    Avg. Time Online: N/A
    Rep Power
    5

    Brown, dirty looking engine coolant?

    I recently noticed the engine coolant in my 2000 Grand Cherokee is brown and

    dirty looking. Using a hydrometer, the fluid tested fine for temperatures, and

    the engine doesn't overheat. I was thinking maybe just a rad flush would do the

    trick. I haven't had one done yet. I was reading that sometimes more than one

    flush may be required to clean it out fully. Any advice on possible causes that

    would turn the fluid brown?

  2. #2
    Join Date
    Dec 2003
    Location
    Peterborough, ON
    Posts
    5,404
    Time Online: 1 Mth 3 Wks 2 Days 3 Hrs 16 Mins 44 Secs
    Avg. Time Online: 4 Mins 43 Secs
    Rep Power
    16
    I'd perform a leakdown test to ensure it isn't oil leaking into the coolant.

    Are you losing any oil/coolant?

  3. #3
    Join Date
    Jun 2009
    Location
    Sudbury, Ontario
    Posts
    92
    Time Online: 2 Hrs 45 Mins 24 Secs
    Avg. Time Online: N/A
    Rep Power
    5
    The coolant levels haven't changed, and I check the oil regularly and things are good. I had read that dirty coolant could be a sign that your engine is rusting internally, which I hope it isn't, or that the rad is rusting inside.

  4. #4
    Join Date
    Apr 2009
    Location
    hamilton
    Posts
    2,177
    My Mood
    Fine
    Time Online: 4 Mths 4 Days 3 Hrs 32 Mins 5 Secs
    Avg. Time Online: 11 Mins 3 Secs
    Rep Power
    8
    maybe your engine uses that orange coolant
    like mine does so it looks dirty????

  5. #5
    Join Date
    Oct 2006
    Location
    Leamington
    Posts
    994
    My Mood
    Lurking
    Time Online: 1 Wk 2 Days 22 Hrs 20 Mins 5 Secs
    Avg. Time Online: 53 Secs
    Rep Power
    8
    Just because your coolent is fine for temp doesent mea that its ok

    Coolent has additives for anti corosion and other things Personnally I would get one of those cheap walmart flush kits that slpice in line with the heater and flush your rad out 2 or three times to get any acids or sediments that have built up in your system

    then filler with a high quality coolent mixed to the proper ratio with water a new thermostat and rad cap wouldent hurt either *** I would do this as basic maintenance every couple years***

  6. #6
    Join Date
    Jun 2009
    Location
    Sudbury, Ontario
    Posts
    92
    Time Online: 2 Hrs 45 Mins 24 Secs
    Avg. Time Online: N/A
    Rep Power
    5
    Thanks for the tips, I'll look into one of those flush kits you mentioned.

  7. #7
    Join Date
    Aug 2006
    Location
    Elmvale, ON
    Posts
    6,201
    Time Online: 17 Hrs 57 Mins 54 Secs
    Avg. Time Online: 3 Secs
    Rep Power
    14
    and dont forget, distilled water is the way to go when you mix a batch
    Keepn' the Rubber Side down.

    '06 TJ | 2 headlights | broken cheap ass fogs | 30 lbs of mud in frame | undersized spare | dented fender | dented rear quarter | Stainless washers on license plate | softdoors with broken handles | Three black box thingies that look expensive | rusty hitch | lots more payments

    I Support OF4WD

    Quote Originally Posted by biohazard
    thank you i needed a new sig

  8. #8
    Join Date
    Jul 2008
    Posts
    5,031
    Time Online: N/A
    Avg. Time Online: N/A
    Rep Power
    0
    excelent advice antyfreeze can also becove verry acidic and can disolve aluminum there is ph tests you can do but its just best to change it every 2 years

  9. #9
    Join Date
    Jun 2005
    Location
    Hamilton
    Posts
    5,005
    Time Online: 1 Mth 3 Wks 5 Days 1 Hr 17 Mins 46 Secs
    Avg. Time Online: 4 Mins 59 Secs
    Rep Power
    14
    I have personally seen coolant eat through an aluminum block, 10 year old Corolla. Those flush kits from WalMart or CTC that go into the heater hose are still the best way (@ home) to flush a cooling system.

    Drain your existing coolant into a jug for recovery & recycling
    Add the Tee fitting to your heater hose (doesn't matter which)
    Attach garden hose to Tee, and remove rad cap
    Start the hose
    Start your engine
    Watch the junk come out your rad / overflow.

    Turn off hose, drain tap water, and refill 60/40 with virgin coolant and distilled water.
    ....-Noltz
    '91 Frankenheep Edition. 4.0, 4" BDS, Richmond 8.8, 35" KM2's, Titan 12k, ... gone.
    '95 4Runner SR5. Air-Lift bags, OBA & 8K Winch, DD... gone.
    The Drive Clean FAQ
    .

  10. #10
    Join Date
    Jun 2009
    Location
    kitchener,ontario
    Posts
    142
    Time Online: 13 Hrs 32 Mins 49 Secs
    Avg. Time Online: 3 Secs
    Rep Power
    5
    yea i agree with the flush kits its a good start, have you been running hard water as your mixture with coolant because that would lead to this issue.

  11. #11
    Join Date
    Jun 2009
    Location
    kitchener,ontario
    Posts
    142
    Time Online: 13 Hrs 32 Mins 49 Secs
    Avg. Time Online: 3 Secs
    Rep Power
    5
    the only thing is i believe that the 2000 grand cherokee has that 100,000 mile collant in it doesnt it? i remember reading that in the haynes when i was working on my buddies 2002 a couple weeks ago

  12. #12
    Join Date
    Jun 2009
    Location
    Sudbury, Ontario
    Posts
    92
    Time Online: 2 Hrs 45 Mins 24 Secs
    Avg. Time Online: N/A
    Rep Power
    5
    I'm not sure if the coolant has been mixed with hard water before or not. I just bought the jeep back at the end of April. It has high km's, in the 213,000 mark. I opened the coolant reservoir and smelt the fluid and it has a burnt smell to it, and just doesn't seem right. I'm not sure if the coolant has ever been changed or not in the past. The flush sounds like a good idea.

  13. #13
    Join Date
    Feb 2007
    Location
    Mississauga
    Posts
    271
    Time Online: 7 Hrs 8 Mins 53 Secs
    Avg. Time Online: 1 Secs
    Rep Power
    8
    Sounds like that stop leak stuff is in the coolant. It tends to have a burnt smell to it. While flushing the coolant you may discover a leak in your system.
    03 TJ Rubi, 4" Super lift coils w/ RE adj. Superflex arms, Pro Comp front adj. track bar, RE rear adj. track bar, 1" BL, 1" MORE bomb proof motor mount lift, Poly tranny mount, AR Baja wheels, 35" BFG Krawlers, Staun internal bead locks, Tom Woods CV drive shaft, Warn M8000, locker safety over ride, Four Real steal front stinger, Bestop tire carrier, Smittybuilt rear bumper, 4 Hella 500 on a light bar. The last ones for the yee haw factor

  14. #14
    Join Date
    Feb 2007
    Location
    oshawa
    Posts
    703
    My Mood
    Twisted
    Time Online: 3 Wks 1 Day 3 Hrs 7 Mins 8 Secs
    Avg. Time Online: 1 Min 58 Secs
    Rep Power
    8
    ya definatly flush it and urs will be the orange stuff those flush kits work awsome and wen ur done drain the block as well theres a bolt on the block to drain it to cet the majority of the coolant out i believe its on the drivers side below the head
    rockin the 95 xj custom 4inch lift and 285/75/16 bfg mud terrain km2 and bds discos R.I.P

    98 xj 4.0L 5spd 4.5" zone lift and m/t sidebiters looking for 33s

  15. #15
    Join Date
    Jun 2009
    Location
    kitchener,ontario
    Posts
    142
    Time Online: 13 Hrs 32 Mins 49 Secs
    Avg. Time Online: 3 Secs
    Rep Power
    5
    theres a product out there that helps seal it thats not that crap stop leak but it seals up the coolant passages with a coating thats good for high mile vehicals with coroded insides

  16. #16
    Join Date
    Apr 2009
    Location
    barrie,on
    Posts
    44
    Time Online: 1 Day 14 Hrs 26 Mins 8 Secs
    Avg. Time Online: 8 Secs
    Rep Power
    5
    if you mix the green coolant and the long life red stuff it goes brown as well maybe someone did that?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •