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VX commodore Oil Leaks - Diagnosis

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by keithy111, Jun 24, 2018.

  1. keithy111

    keithy111 Member

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    G'day,

    Have nothing else to do with my time but to try figure out where me oil leaks are coming from with me VX commodore. Oil is leaking quite rapidly atm (having to top up every 5months) ... I've gathered a couple of images, I'm assuming its coming from the rear of the engine (rear main seal), however not 100% with this...
    Here are the images;
    [​IMG]
    [​IMG]

    [​IMG]
    [​IMG]

    [​IMG]
    ^^ Sump is at the very top of image above -- Doubt Sump is leaking
    [​IMG]

    Cheers boys !
     
  2. lout

    lout Well-Known Member

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    most likely rocker covers
    go to carwash and get that engine really clean
    tomorrow see where it is oily
     
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  3. mpower

    mpower Well-Known Member

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    also oil pressure sender or oil pan itself, last and most expensive rear main.

    but yeah as above - degrease the crap out of it and you should find out pretty quick where it is.
     
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  4. Sabbath'

    Sabbath' Shipwrecked

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    Also consider doing engine mounts while you're down there.
     
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  5. mpower

    mpower Well-Known Member

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    excellent advice.
     
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  6. shueardm

    shueardm Active Member

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    Just to go one step further and explain why. The oil that you are dropping all over the place gets into the engine mounts and makes then sag prematurely. A VX would have probably had them already done , maybe even twice - but it's the oil that will ruin them again
     
  7. mpower

    mpower Well-Known Member

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    why would they be done? My VX2 had it's first set done earlier this year. The fact that the engine had to be lifted to get at the sump gasket was an excellent opportunity to do the mounts.
     
  8. shueardm

    shueardm Active Member

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    If they were recently done then they will probably be ok. It will take a while for the oil to destroy them but you must get the leak fixed or you know now what will happen,
    OOPS, different person. I see what you mean now.
    If your VX has only just had them done that's good you must have not had oil leaks too badly.
     
  9. NeddyBear

    NeddyBear Veteran Mountain Biker

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    How'd you go after degreasing the engine, trans and underside, found where the oil is leaking from?
     
  10. VT&VX

    VT&VX Active Member

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    Tighten all your rocker cover gaskets, use some rear main seal stop leak chemical in the oil, because it tries to plug all the small leaks (rocker covers to rear main seal)
    If the problem is rear main seal, why?

    Do you habitually over fill your oil, are you building up pressure in crank case because of blocked pcv.
    Has gritty oil cut grooves in your crank. You might have to sleeve it or it will cut up your new seal.

    What happens if you double check your engine oil level to be correct, Loosen your oil cap (but make sure it doesn't fall off while engine running) so it can release any pressure that might build up in your crank case. Does that slow down your oil leak?
     
  11. keithy111

    keithy111 Member

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    I've degreased it as much as possible, even chucked some cardboard underneath while car was sitting... Leaks are in no doubt coming from rear of engine somewhere.
    I replaced rocket cover gaskets last year, when oil was leaking onto exhaust creating a smoke whilst driving (so clearly not them)
    Oil filter on tight, as well as sump bolt...
    [​IMG]
    Its from this area where it is leaking the most ^^^^, also proven from cardboard underneath car check...

    Cheers Boys,
    Keithy111
     
  12. mpower

    mpower Well-Known Member

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    looks pretty close to what I had.

    mine was pan and, main.

    but dude - degrease - then don't drive it. start it up and let it sit there running otherwise the stuff sprays everywhere so you're back to square one.
     
  13. shueardm

    shueardm Active Member

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    hey?
    Surely.... surely you know that all VT VX rear main seals leak prematurely.
     
  14. Lex

    Lex Active Member

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    Mine doesn't!
     
  15. shueardm

    shueardm Active Member

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    Replaced before you purchased OR go and buy lottery ticket
     
  16. Lex

    Lex Active Member

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    Replaced engine Jan. 2013 with 190k - 200k. As far as l know, never been replaced. It was a lpg engine.
    I did a compression test Jan.2014 no.6 180, no. 1 175, the rest were 165. Thats about all l know about that engine. Also l change the oil about every 5k.
     
  17. El_Freddo

    El_Freddo New Member

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    News to me...

    I'm with Lex, ours hasn't been done. We got our VT at 80k km in '04, rear main still going strong at 360k km. I'll be expecting a groove in the crank by the time we come around to replace it...

    All seals will die some day! We keep oil changes at 10k km or as close to as possible. One change blew out to 25k km when we were both unemployed and living on noodles :/
    We always use the same mineral based oil and it seems to go well.

    @keithy111 - how much oil is involved with a "top up" and how many km will have been travelled in that time?
    5 month before a top up doesn't seem that bad to me, as in I'd deem it acceptable if you're going between 6-10k km in that time and you're topping up from the low line to the full line or doing an oil change.

    But if your engine leaks enough oil to drop on a sheet of cardboard at idle I'd be concerned about it and making plans to replace the rear main seal and any other seals identified as leaking.

    Cheers

    Bennie
     
  18. mpower

    mpower Well-Known Member

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    point is kids, it's a known issue.

    OP needs to degrease then run the car without driving all over the countryside so he can identify the leak.

    a workshop would most likely do this too to try and find the leak.

    the fact he degreased then he's got oil everywhere again means he has a pretty decent leak somewhere.
     
  19. shueardm

    shueardm Active Member

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    Very well known.
     
  20. lout

    lout Well-Known Member

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    330,000km touch wood only oil leaks was rocker cover around 240,000 and oil pressure sender around 200,000
     

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