Monster MotorsportChris Nott
Results 1 to 6 of 6
  1. #1
    olds_kool's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Jul 2007
    Location
    stoke on trent
    Posts
    1,071

    coolant sludge??

    bought another cheap a4 1.8t, dodgy bodywork and oil light flashing after about 1/2 hours driving
    following byzans thread from a few weeks ago i managed to change oil pump (hardest part was cleaning sump out!)

    anyway when i pulled off top radiator hose a brown sludge came out (looked exactly like very thick chocolate milkshake)
    anyone got a clue what it is or what caused it?
    kev
    a4 stuff http://shop.ebay.co.uk/merchant/olds_kool_gti
    99 1.8tqs black saloon
    99 1.8tqs grey avant
    90 eunos roadster

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    "Stick a V8 in it!"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,372
    Mixing standard antifreeze and original G12 coolant is the usual cause. G12+ is supposed to handle mixing better.

    You'll need to properly flush the whole system and refill with proper red OAT coolant.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  4. #3
    6th Gear

    Status
    Offline
    Join Date
    Sep 2009
    Location
    Essex
    Posts
    2,366
    thats what i thought too

  5. #4
    olds_kool's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Jul 2007
    Location
    stoke on trent
    Posts
    1,071
    thats what i was hoping it was, had head gasket failure going through my mind though
    will get the hose on it and cross my fingers
    kev
    a4 stuff http://shop.ebay.co.uk/merchant/olds_kool_gti
    99 1.8tqs black saloon
    99 1.8tqs grey avant
    90 eunos roadster

  6. #5
    Geeman's Avatar
    Low Life

    Status
    Offline
    Join Date
    Mar 2009
    Location
    Grimsby
    Posts
    1,318
    If it's brown sludge, it'll be the coolant mix scenario. Nothing too much to worry about and recoverable from.

    You should worry if it's a light cream colour, like mayo. That's a sign of the head-gasket not being happy.
    NEW 6 cylinder 40mm front springs - £40

    PM me for more info

  7. #6
    Reverse Gear

    Status
    Offline
    Join Date
    Nov 2009
    Posts
    20
    I had this and thought head gasket. Once I looked into it it was the oil cooler. Apparently it's much more common on these. It was only around 30 from euro car parts and an easy change, worst part is flushing the coolant system out. It happened after changing my oil pump, I think the increased pressure from the new pump prob caused it.

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO