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    Thread: what is this? milky substance around oil cap

    1. Member Spax MC's Avatar
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      12-04-2007 01:36 PM #1
      I installed my neuspeed short shifter today and I decided to check my oil level and add just a tiny bit.
      I took of the oil cap and saw this


      Is that coolant leaking into the engine?

    2. Former Advertiser
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      12-04-2007 01:38 PM #2
      Yep, thats a coolant/oil milkshake.
      Check your oil cooler / heat exchanger and you might want a compression test to check the headgasket.
      Any mods? Is it only around the cap like that or is it in your coolant bottle too?

    3. 12-04-2007 01:45 PM #3
      Quote, originally posted by Robin @ Revo Technik »
      Yep, thats a coolant/oil milkshake.
      Check your oil cooler / heat exchanger and you might want a compression test to check the headgasket.
      Any mods? Is it only around the cap like that or is it in your coolant bottle too?

      Nope, it is most likely condensation buildup from the cooler weather.
      Dave

    4. Member Spax MC's Avatar
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      12-04-2007 01:46 PM #4
      the car runs stock software has milltek tbe and neuspeed intake. when i first got it last november it had tiny traces of this stuff and it went away in the summer. now that the winter comes it's back
      so, back for service it goes (just got my second front bearing replaced last week)

    5. Member Spax MC's Avatar
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      12-04-2007 01:48 PM #5
      Quote, originally posted by crew219 »
      Nope, it is most likely condensation buildup from the cooler weather.
      Dave

      i really hope so, as i said it was gone in the summer the car runs like a champ. i'm going outside to inspect the coolant reservoir

    6. Former Advertiser
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      12-04-2007 01:52 PM #6
      Dave,
      Most of that should burn off once the oil gets up to temperature. Thats quite a bit, its not trace amounts.
      Spax-- is the car used often? Or just quick short trips?

    7. 12-04-2007 01:54 PM #7
      Quote, originally posted by Spax MC »
      i really hope so, as i said it was gone in the summer the car runs like a champ. i'm going outside to inspect the coolant reservoir

      It isn't coolant. Every year around this time, plenty of n00b posts pop up asking about this. It basically has to do with thicker oils not being able to reach the temperatures to effectively evaporate fuel and water condensation in the oil system. Given that the oil cap is one of the highest parts of the engine, you'll find this residue collected around the oil cap.
      I switch to 0w30 in the winters and notice less of this effect.
      Dave

    8. Member Spax MC's Avatar
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      12-04-2007 01:57 PM #8
      the car is used often for short trips. 3 miles from my house to my gf house. i never ever drive it hard when it's cold. i'm using elf 5w-40 and i check the oil level weekly. the car uses very little to no oil at most half a quart every 5k miles
      thanks for the replies guys [IMG]http://**********************/smile/emthup.gif[/IMG]

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      12-04-2007 01:58 PM #9
      I usually get a bit of that every now and then, but nothing nearly that extreme

    10. Former Advertiser
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      12-04-2007 02:06 PM #10
      Take it out and get it nice and hot once in a while, I bet that'll vanish

    11. 12-04-2007 02:08 PM #11
      Quote, originally posted by Robin @ Revo Technik »
      Dave,
      Most of that should burn off once the oil gets up to temperature. Thats quite a bit, its not trace amounts.

      It normally does not fully burn off, not to mention the bout of 20 degree weather we've been having in NY doesn't really allow the oil to ever truely get up to temperature.
      Just changed the oil this past thursday. Only drove the car maybe 3 times this weekend. This is what my oil cap looks like today with fresh 0w30 oil.


      Now multiply that effect with a 5w40 oil that takes longer to get to temperature and short 3 mile trips. My coolant temp gauge doesn't even budge with one mile of driving. The oil isn't going to get heated up that much either.
      Dave

    12. Member Spax MC's Avatar
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      12-04-2007 02:13 PM #12
      would it be better if i started the car early and let it warm up before making the 3 mile trip?
      i remember reading something about carbon depositing when you do that

    13. 12-04-2007 02:15 PM #13
      Quote, originally posted by Spax MC »
      would it be better if i started the car early and let it warm up before making the 3 mile trip?
      i remember reading something about carbon depositing when you do that

      Letting the car idle doesn't warm the engine up as well as driving. If anything I'd consider taking a slightly longer route back from work, or making sure that you mix in a few longer drives a few days each week. The condensation is normal and for the most part, harmless.
      Dave

    14. Senior Member MFZERO's Avatar
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      12-04-2007 02:16 PM #14
      I changed the oil in my gf's car this past weekend and found the same but less of it on the oil cap. should just be condensation like Crew said.

    15. Member thutty2's Avatar
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      12-04-2007 02:23 PM #15
      I've noticed this a couple of times on my car also. I figured the f'en dealer had screwed something up during one of it's week long "visits". Funny thing is I never saw this on my 3 previous VW's.

    16. 12-05-2007 08:08 AM #16
      Shot these this morning after only 11 miles (in one outing) being driven on the car since the last pictures. The oil cap and filler were wiped clean after the last pics.


      Guess I have that blown headgasket
      Dave

    17. 12-05-2007 05:00 PM #17
      That my friend is a ****LOAD of "milky white stuff" around your oil fill cap. This condition is commonly associated with a BLOWN Head Gasket. Through my experience... on ANY car I've ever seen that much white stuff on the oil cap, it ALWAYS meant a Blown Head Gasket.
      Sold the VAG COM

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      12-05-2007 05:46 PM #18
      Quote, originally posted by rippie74 »
      That my friend is a ****LOAD of "milky white stuff" around your oil fill cap. This condition is commonly associated with a BLOWN Head Gasket. Through my experience... on ANY car I've ever seen that much white stuff on the oil cap, it ALWAYS meant a Blown Head Gasket.


      Well, your experience is obviously very limited. Read crew's responses, he's exactly right.

    19. 12-05-2007 06:44 PM #19
      Yea I had a cap that looked similar with all the white stuff, my dealer said it was just condensation, he said theres alot of it on there because it probably had never been cleaned off and was just building up on there.
      I cleaned the cap about 3000 miles ago, changed my oil yesterday and there was hardly any of it on there

    20. Member OOOO-A3's Avatar
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      12-05-2007 08:05 PM #20
      Quote, originally posted by crew219 »
      Nope, it is most likely condensation buildup from the cooler weather.
      Dave


      Exactly. If you want to see n+1 people freaking out about this on a daily basis, hang out at rx8club.com for a while. It means nothing. It's just condensation. (Mazda finally issued a recall campaign that modified a breather hose to reduce condensation around the dipstick, and a squeegee liner for the dipstick, because that was easier than trying to explain the truth to people who just wouldn't listen.)
      Seriously, it's nothing. If ALL your oil looks like that, it's something. Otherwise, wipe it off with a paper towel and move on.

    21. Member munky18t's Avatar
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      12-05-2007 08:44 PM #21
      i just checked mine and i have the same amount of white gunk

    22. 12-05-2007 08:46 PM #22
      Quote, originally posted by thutty2 »
      I've noticed this a couple of times on my car also. I figured the f'en dealer had screwed something up during one of it's week long "visits". Funny thing is I never saw this on my 3 previous VW's.
      That's because for one, you probably didn't run 5w40 in your previous VWs, and for some odd reason it seems to take 2.0ts forever to warm up.
      I still don't understand why it's impossible for this car to warm up at idle. Not that it's something I do, but it's just weird. Plus it seems to take forever even when driving.

    23. Member Spax MC's Avatar
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      12-05-2007 08:54 PM #23
      my tech said that the fsi technology is very similar/shares qualities of a diesel
      can someone elaborate? or is it complete bs

    24. 12-05-2007 10:05 PM #24
      yes, they are both direct fuel injection.
      99 Golf Tdi
      evo IX RS, 9.76@148..

    25. Member gtiiiiiiii's Avatar
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      12-05-2007 11:31 PM #25
      your car got a little too happy/stimulatated, happens to people all the time.
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