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Water in oil, not head gasket though...

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by sxc_sound, Jul 1, 2009.

  1. sxc_sound

    sxc_sound Naturally stroked

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    Hey guys, for the past like 2-3 months if have a VERY slow build up of pale brown gunk on the bottom of the radiator cap. Slow being, il wipe off the gunk stuff once every 3 weeks and its less then a teaspoon.

    There is no gunk stuff building up under the engine oil cap and no steam coming out the exhaust and the car runs fine, although once in awhile when the car is idling it with shake for a split second like something is passing though the motor that shouldn't, aka a drop of coolant or oil somewhere it shouldn't be..

    So what other possible places could oil/coolant leak into very slowly... i really want this fixed before it turns into a massive leak or something bad
     
  2. Ozzie

    Ozzie JCCC Warrnambool

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    I have the exact same symptoms man...

    For me its the trans cooler line that was leaking inside the radiator
     
  3. social

    social Ute Finatic

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    yep ozzie beat me to it id put my money on the exact same thing. Check the levels / colour of your transmission stick.
     
  4. sxc_sound

    sxc_sound Naturally stroked

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    my transmission fluid was down a fair but and my transmission started playing up, i added more fluid and it was fine again, the fluid looked bright red still though. How would i go about checking if it is the transmission cooler
     
  5. Kunu

    Kunu chasing the big 300!!!

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    I had the same problem and my rear main seal had gone allowing oil to slowly drip into cooling lines., had brown gunge under cap and inside run-off box.
     
  6. Simonn

    Simonn New Member

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    rear main seal? if that had gone it would only allow engine oil into the bell housing.
    it would either be a cracked trans cooler inside the radiator or like me a inlet manifold gasket is gone.
     
  7. stevesvx2001

    stevesvx2001 New Member

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    its your oil cooler bro its one of the seals where the coolant meets the oil and cooles it down, when you fix it make sure you take off the top of your radiator and give it a realllllllllly good clean cause the sludge will start to block off some of the fins you can do this easyly with a old dip stick. if you leave it long enough you will clog up you cooling system and you will find it over heating, but it might not show on gauge cause the sludge could be covering your coolant temp sender, also the coolant getting into your oil and can cause pressure that can start causing all sorts of problems
     
  8. Kunu

    Kunu chasing the big 300!!!

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    Well it hadnt gone completly ,it had a small crack in it which was allowing engine oil to leak through to the cooling lines, once i replaced it the problem was solved also needed a good flush out twice to make sure all the gunk was gone.In saying that its a process of elimination really.

    Here's a pic
    http://forums.justcommodores.com.au/members/kunu-albums-random-picture5826-rear-main.html
     
  9. Ozzie

    Ozzie JCCC Warrnambool

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    If it was the rear main seal there would be coolant in the engine making the oil a creamy colour.

    The trans cooler line has preasure in it allowing oil into the radiator without allowing coolant into the transmission.

    Its fairly common if the car has been constantly in economy mode then driven in power mode then switched back to economy.

    An easy temp fix is to use some transmission stopleak and/or radiator stopleak to seal the leak within.
     
  10. Simonn

    Simonn New Member

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    ohok thanks for the heads up mate
     
  11. burnz

    burnz dah dut dut da dah

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    sometime's the brown gunk is from the pellet's that go with the coolant!! (V6 only)
     
  12. Swordsy

    Swordsy mmmm beer....

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    Generally id say you need to flush your cooling system.
     
  13. Happy

    Happy New Member

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    Ozzie.....Does a session in power mode damage the pipe or just pressurise trans oil through an existing crack?
     
  14. 86VL5spd

    86VL5spd Repn RB 20-10

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    It will more likely be valley cover gasket mate, slight creamy brown build up, trans cooler leaks r more pinkie sluge if trans oils not cookd, but the amount of valleys i do at work my moneys on your valley cover gaskets, not hard to do, valley off, you go buy a valley kit from a parts place slap back to get after a good clean and buzzed gasket surfaces up
     
  15. Ozzie

    Ozzie JCCC Warrnambool

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    Economy mode preasurises the pipe causing it to split. It will let oil out but wont let coolant in.

    I drive in power mode 100% of the time now. If I put it into economy mode not only will i lose alot of power but i will get oil in the radiator. And I never get coolant in the transmission.
     
  16. whstatesman2000

    whstatesman2000 New Member

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    hey guys ive got the same sort of problem. i have some sludge built up under the cap and in the overflow bottle dipstick there is a ring of oil on it. the oil looks like enging oil. no water or coolant in the engine though.
    any ideas where it could be coming from?
    cheers
     
  17. 86VL5spd

    86VL5spd Repn RB 20-10

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    Valley cover.....

    Itl be your valley cover gaskets are gone, common Ecotech problem, what doesnt leak on em!

    overflow bottle dip sticks are always covered in brown muddy crap, its what holdens use to use stupid anit leak brown tablets, nothnig to worrie bout there, just coom as dog sh*t valley cover gaskey leak, oil makes its way in coolant galls under inlet manfold.

    not to hard to replace the gasket kits, i do em all tha time as homies at home, easy quick $$$
     
  18. JST-23Z

    JST-23Z New Member

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    transmission oil leaking into the radiator from the oil cooler
     
  19. whstatesman2000

    whstatesman2000 New Member

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    under the radiatior cap there is brown muddy crap like sludge. but in the overflow bottle on the end of the dipstick there is a ring on eng oil on it?
     
  20. banga

    banga New Member

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    is it an easy job to change the valley cover gaskets? there seems to be a shit load of stuff in the way , i reckon ill put something on in the wrong way ?
     

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