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Over filled engine oil

  • 14-03-2009 11:10am
    #1
    littletiger
    Registered Users, Registered Users 2 Posts: 256 ✭✭


    Hi, I have over filled my diesel car with engine oil. It's about 1/2 inch above the top mark on the dipstick. Will this cause any harm?


Comments

  • #2
    Darragh29
    Closed Accounts Posts: 7,097 ✭✭✭Darragh29


    Can you take a pic of the dipstick just after dipping it? It depends on how much you've overfilled it. Ideally you should let some out to bring it back to where it should be. There is a certain amount that you can get away with, but there is an amount that can cause damage if you don't let some out...


  • #3
    BostonB
    Closed Accounts Posts: 18,056 ✭✭✭✭BostonB


    Did you start the car since you did it. Then stop let it settle and dip it again. The level will drop. If it is overfull its not that big a job to drain a bit out. Its not meant to be overfull.


  • #4
    Darragh29
    Closed Accounts Posts: 7,097 ✭✭✭Darragh29


    Op were you just topping up the oil or did you drain out the old oil before overfilling it?


  • #5
    Tefral
    Registered Users, Registered Users 2 Posts: 4,396 ✭✭✭Tefral


    open the sump nut and leave a bit drain out.. Overfilling is nearly as bad as not filling it enough... you can feck up the oil seals.


  • #6
    Darragh29
    Closed Accounts Posts: 7,097 ✭✭✭Darragh29


    cronin_j wrote: »
    open the sump nut and leave a bit drain out.. Overfilling is nearly as bad as not filling it enough... you can feck up the oil seals.

    It's actually a lot worse! It depends on how much it was been overfilled, any more than the minimum and you could be in the manure business. I don't know whether the oil was actually changed or just topped up, I get the impression that it was just being topped up. If it was being changed, I think the OP would have just let some out and that would be the end of that issue.


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  • #7
    cnocbui
    Registered Users, Registered Users 2 Posts: 20,240 ✭✭✭✭cnocbui


    Darragh29 wrote: »
    It's actually a lot worse! It depends on how much it was been overfilled, any more than the minimum and you could be in the manure business. I don't know whether the oil was actually changed or just topped up, I get the impression that it was just being topped up. If it was being changed, I think the OP would have just let some out and that would be the end of that issue.

    +1

    Overfilling is worse - the crankshaft can hit the oil at high revs and you can break the crank, connecting rods etc, etc.


  • #8
    BostonB
    Closed Accounts Posts: 18,056 ✭✭✭✭BostonB


    Darragh29 wrote: »
    It's actually a lot worse! It depends on how much it was been overfilled, any more than the minimum and you could be in the manure business. I don't know whether the oil was actually changed or just topped up, I get the impression that it was just being topped up. If it was being changed, I think the OP would have just let some out and that would be the end of that issue.

    I didn't think they were just topping it up. That more likely alright.

    Why never fill more than the minimum. Did you mean the maximum.


  • #9
    littletiger
    Registered Users, Registered Users 2 Posts: 256 ✭✭littletiger


    Yes I was just topping it up. Dipped it again a few minutes ago and it is about a bit (5-10mm) over the max level. Could that cause alot of damage?
    I didn't really have any place to drain the sump where I live.


  • #10
    Nonoperational
    Registered Users, Registered Users 2 Posts: 7,401 ✭✭✭Nonoperational


    5 - 10 mm should be fine.


  • #11
    Darragh29
    Closed Accounts Posts: 7,097 ✭✭✭Darragh29


    BostonB wrote: »
    I didn't think they were just topping it up. That more likely alright.

    Why never fill more than the minimum. Did you mean the maximum.

    Yeah sorry, meant to say maximum! Or I mean I meant to say the minimum ABOVE the maximum!


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  • #12
    littletiger
    Registered Users, Registered Users 2 Posts: 256 ✭✭littletiger


    The reason why I was topping it up is because there is an oil leak. Can't see where exactly it is coming from but it has been there for a while because there is an area of dry oily dirt around the drip. It will fail the NCT for an oil leak won't it?


  • #13
    Nonoperational
    Registered Users, Registered Users 2 Posts: 7,401 ✭✭✭Nonoperational


    There;s a good chance they eouldnt notice it.


  • #14
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    littletiger wrote: »
    The reason why I was topping it up is because there is an oil leak. Can't see where exactly it is coming from but it has been there for a while because there is an area of dry oily dirt around the drip. It will fail the NCT for an oil leak won't it?

    Well if there's an oil leak, it won't be above the max for long! ;)

    What car/year/engine? some people here might be able to advise specific places to check for the oil leak.....

    5 to 10mm shouldn't cause a problem...


  • #15
    Wishbone Ash
    Registered Users, Registered Users 2 Posts: 25,038 ✭✭✭✭Wishbone Ash


    Leave the car sitting overnight and dip it again tomorrow morning when the oil is cold and fully drained into sump. It will give a more accurate reading.


  • #16
    littletiger
    Registered Users, Registered Users 2 Posts: 256 ✭✭littletiger


    It is an 01 Diesel peugeot 406. The engine isn't smokey or anything like that. I think its coming down at the back of the engine and around the sump nut. How high up its coming from I don't know. The oil filter is on the front so its not from there. Any ideas?


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