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Yellow residue around oil cap?

  • 23-12-2014 3:17pm
    #1
    PrettyBoy
    Registered Users, Registered Users 2 Posts: 4,213 ✭✭✭


    Just giving the car a quick clean and had a quick look over the engine, when I removed the oil cap I saw this yellowish substance. I can't recall seeing this stuff before. I'm clueless about engines but it doesn't look good.. Can anyone here advise me on what it is and what I should do?

    Car is a BMW 320 petrol (e46)

    f562ow.jpg


Comments

  • #2
    boardsuser1
    Closed Accounts Posts: 6,196 ✭✭✭boardsuser1


    Either condensation or the heat gasket is fried,had a similar issue recently, and it was condensation


  • #3
    bear1
    Registered Users, Registered Users 2 Posts: 12,866 ✭✭✭✭bear1


    It looks like a mayonnaise type colour, I'd also be thinking that the head gasket is failing.


  • #4
    porsche boy
    Registered Users, Registered Users 2 Posts: 1,560 ✭✭✭porsche boy


    Get a garage to do a pressure test on the cooling system.


  • #5
    boardsuser1
    Closed Accounts Posts: 6,196 ✭✭✭boardsuser1


    porsche boy wrote: »
    Get a garage to do a pressure test on the cooling system.

    +1 for the pressure test,that should answer it is the car overheating or taking more coolant than usual OP???


  • #6
    PrettyBoy
    Registered Users, Registered Users 2 Posts: 4,213 ✭✭✭PrettyBoy


    KC161 wrote: »
    +1 for the pressure test,that should answer it is the car overheating or taking more coolant than usual OP???

    No, not overheating at all, coolant level normal.


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  • #7
    Kenny Logins
    Registered Users, Registered Users 2 Posts: 9,060 ✭✭✭Kenny Logins


    I'd go for a drive (proper warm up) and have another look before worrying about it.


  • #8
    Voodoomelon
    Registered Users, Registered Users 2 Posts: 9,661 ✭✭✭Voodoomelon


    gunk2.jpg

    From my last 6 cylinder 728i. Condensation from short journeys. If your coolant level is fine, auxiliary fan and water pump fan are fine and coolant levels are fine, I wouldn't be worried.


  • #9
    PrettyBoy
    Registered Users, Registered Users 2 Posts: 4,213 ✭✭✭PrettyBoy


    Voodoomelon wrote: »
    From my last 6 cylinder 728i. Condensation from short journeys. If your coolant level is fine, auxiliary fan and water pump fan are fine and coolant levels are fine, I wouldn't be worried.

    That's good to hear. I haven't been driving it much recently, when I do the journeys are usually very short (5-10 miles).


  • #10
    boardsuser1
    Closed Accounts Posts: 6,196 ✭✭✭boardsuser1


    PrettyBoy wrote: »
    That's good to hear. I haven't been driving it much recently, when I do the journeys are usually very short (5-10 miles).

    Same as myself, I've only done 90 miles since mid October, hence the lack of use is behind it


  • #11
    Alanstrainor
    Registered Users, Registered Users 2 Posts: 23,157 ✭✭✭✭Alanstrainor


    I occaisionally get this on my 325ci, check your levels and if all's good then happy days. A blast down the motorway will sort it out fairly sharpish.


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  • #12
    Voodoomelon
    Registered Users, Registered Users 2 Posts: 9,661 ✭✭✭Voodoomelon


    I said coolant level twice. Check em twice so! :p


  • #13
    Alanstrainor
    Registered Users, Registered Users 2 Posts: 23,157 ✭✭✭✭Alanstrainor


    Voodoomelon wrote: »
    I said coolant level twice. Check em twice so! :p

    You'd know you've been a BMW owner for more than a little while so!


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