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Thread: Mayo Question

  1. #1
    Regular Member Vaux-Man-G's Avatar
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    Default Mayo Question

    Hi chaps,

    Just been driving the wife's Astra for a week so to make sure its all OK.

    It seems to be running fine.

    Quick question though, the oil filler cap seems to have a bit of mayo type gunk on it, although when I take the cap off and away, its like its condensation on it.

    Now the dipstick is 100% free of mayo and has normal oil on it (no traces at all of mayo).

    The car is NOT losing any water, and the water colour is fine as its pinky anti-freeze, it is also NOT overheating.

    I have been driving it for about a week and the most its done is 5-6 miles first thing in the morning and about 5-6 miles in the evening on the way home.

    The most its been driven over the last week is a trip to Walsall today from Birmingham City Centre which was about a 15-20 miles round trip.

    The car is providing heat when needed and the temperature doesnt fly up, in fact in the 6 miles I drive it it hardly moves, although when I left it standing today for about 5'ish minutes after the trip to Walsall it went up to about 80'ish and sort of stopped, then I turned the car off, came back to Birmingham and on the M'way it was sitting at the bottom line and moved back up in and around town, doesnt appear to be shooting up.

    Now I know the Mk 4 Astra 1.6 8v Engine is notorious for Head Gasket's BUT this car has had a Head Gasket and Cambelt Change along with the valves about 10 months ago.

    Is some mayo OK? I have done a search on this forum and alot of comments state that mayo on the oil filler cap is very common especially with short journey's.

    What can you say folk's?

    As said, the dipstick and the oil on the dipstick is clean and is as black as it should be, doesnt seem to have any water residue or any water contamination at all.

    Oh, and the car has been serviced recently too.

    Am I ok?

    I went to see an identical Astra 2 weeks ago which had servere fresh mayo being brewed as I was watching it and that particular one had loads of mayo on the dipstick too, and had not had a belt change nor head gasket replacement.

    Thanks is advance.

    G.

  2. #2
    Regular Member spennny's Avatar
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    Default

    Nothing to worry about, i had this a few weeks ago, good long run and its all clear

  3. #3
    Regular Member DaveW555's Avatar
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    Default

    Sounds like condensation to me, the 1.6 8v is common for it, if you've no water loss and the oil is clean, just wipe off the crud and carry on as normal.

  4. #4
    Regular Member the-wizard's Avatar
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    Vehicle : vectra-c

    Trim : sri

    Engine : cdti

    Year : 2004

    Mileage : 98,000

    Default

    quite common but more so on short journey use, make sure you use semi synthetic oil rather than mineral (normal) this helps with these engines.

  5. #5
    Regular Member Ademusic's Avatar
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    Default

    The same on my dad's old 1.6 8v astra. He didn't use it enough, and the condensation builds up on the cap, and when the engine runs, turns the oil around it milky. My brother's got it now, he uses it alot more and it has completely gone.

  6. #6
    Regular Member alanv6's Avatar
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    Default

    Its just condensation, my 3.2 does the same, nothing to worry about..

  7. #7
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    Trim : SXi

    Engine : 2.2


    Default

    As the guys said above just condensation if it was on the dipstick or cam then you need to worry!

  8. #8
    Regular Member Dose's Avatar
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    Default

    Also to note the breathers are bad for gunjing up to with the short use...

  9. #9
    Regular Member Vaux-Man-G's Avatar
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    Default

    Quote Originally Posted by Dose View Post
    Also to note the breathers are bad for gunjing up to with the short use...
    What would be the best way to clean these out? Where are they on this engine?

  10. #10
    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

    Default

    The ones that come from the cam cover mate, a blast through with an air line helps. Wouldn't be the first 8v with brown gunk on the oil cap

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