1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Lots of milky condensation in oil cap and filler neck

Discussion in '2nd Gen. Tacomas (2005-2015)' started by spaz10, Feb 20, 2010.

  1. Feb 20, 2010 at 8:16 PM
    #1
    spaz10

    spaz10 [OP] New Member

    Joined:
    Feb 20, 2010
    Member:
    #31762
    Messages:
    1
    Gender:
    Male
    First Name:
    Joe
    Lancaster
    Vehicle:
    TRD Sport
    I am finding a lot of yellowish milky condensation covering my filler cap and filler neck. Toyota says it's normal, but it seems like an awful lot for it to be normal. Does anyone have any ideas?
     
  2. Feb 20, 2010 at 8:24 PM
    #2
    wmflyfisher

    wmflyfisher Well-Known Member

    Joined:
    Jun 17, 2009
    Member:
    #18590
    Messages:
    868
    Gender:
    Male
    First Name:
    Wes
    PCB, FL
    Vehicle:
    2010 Sport 4x4
    I just noticed this my last oil change so it makes me feel better that Toyota said it was normal. Maybe some others will chime in. I think I've heard in the past that it's condensation from the crankcase and normal. Hope it is!!
     
  3. Feb 20, 2010 at 8:24 PM
    #3
    blazze2005

    blazze2005 Well-Known Member

    Joined:
    Jan 18, 2010
    Member:
    #29594
    Messages:
    711
    Gender:
    Male
    South Jersey
    Vehicle:
    05 Tacoma Pre-Runner Sport
    Fuel Off-Road Octane Wheels,Yokohama Geolander ATS 265/65/17.Grillcraft,Borla Exhaust,Truxedo Lo Pro Tonneau Cover,Pop n Lock Tailgate Security,Custom Wet Okle TRD Seat Covers,Catch-All Matts,Gatorback Belt,Shorty Antenna,Toyota Bed Matt,Sirius Radio,Vent Sades,20% Lumar Window Tint
    Are you using synthetic oil? I find that the synthetic oil makes it even worse..Cause I use Mobil 1 5W-30

    Do you take short trips to work each day?

    My 05 Tacoma 4.0 does the same thing and it makes allot of that yellowish stuff under my oil cap and even more in the winter

    It's condensation and can't burn off of the plastic oil filler neck and cap like it can on other metal engine parts witch get hotter

    Not a whole lot you can do about it
     
  4. Feb 20, 2010 at 8:25 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    104,103
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Its normal. Lots of short trips, and cold weather cause this. Change the oil more frequently.
     
  5. Feb 20, 2010 at 8:27 PM
    #5
    rcbs204

    rcbs204 Well-Known Member Vendor

    Joined:
    Oct 2, 2009
    Member:
    #23681
    Messages:
    3,694
    Gender:
    Male
    That is usually not a good sign, milky looking oil is a sign of water. Could be head gasket or something to that effect. Does it show up on the dip stick? If so i would definitely question there "normal" statement. Do you have a scan guage, if so i would monitor your engine temp daily, if temp continues to gradually increase over time you have a water leak somewhere.
     
  6. Feb 20, 2010 at 8:28 PM
    #6
    Vectorit

    Vectorit Well-Known Member

    Joined:
    Feb 3, 2010
    Member:
    #30673
    Messages:
    53
    Gender:
    Male
    Southern California
    Vehicle:
    TRD SR5
    King coil overs, Total Chaos uppers, Snugtop
    To be blunt, you have serious problems.
    Do not run the engine, since you are circulating coolant and will destroy the motor.

    Still under warranty? drag it to the stealer and have them fix it.

    No longer warrantied? drag it to the best mechanic you know, and be prepared for a big bill.

    Frothy, or milky oil is "not normal".

    Simple as that.
     
  7. Feb 20, 2010 at 8:30 PM
    #7
    chugchug

    chugchug Well-Known Member

    Joined:
    Nov 11, 2009
    Member:
    #25761
    Messages:
    157
    Gender:
    Male
    First Name:
    Will
    Frederick MD
    Vehicle:
    2012 Toyota Tundra
    I change my own oil for the first time since i bought the truck in Nov. It had a bunch of that crap in it so unbolted the filler neck and cleaned it out and put it back on.
     
  8. Feb 20, 2010 at 8:33 PM
    #8
    tinker_troy

    tinker_troy Well-Known Member

    Joined:
    Sep 17, 2007
    Member:
    #2718
    Messages:
    9,128
    Gender:
    Male
    WA
    x2
     
  9. Feb 20, 2010 at 8:33 PM
    #9
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    104,103
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.

    Hold off on the Doom and Gloom, folks. Condensation forms under the oil cap, as mentioned, it is platic. Short trips can cause water to get into the oil, as water is a by product of the cumbustion process, and if the engine isnt run long enough at operating temp, it cant burn this off. Thus the "Milky" colored oil under the cap. Knock the oil change interval down to 3K miles durring winter, or sooner if all you do are short trips, and it should go away. Also, maybe consider sending an oil sample to http://www.blackstone-labs.com/ to see how the engine is doing.
     
  10. Feb 20, 2010 at 8:34 PM
    #10
    BakoTruck

    BakoTruck Well-Known Member

    Joined:
    May 1, 2009
    Member:
    #16674
    Messages:
    2,837
    Gender:
    Male
    First Name:
    Herbie Hancock
    Bakersfield, CA
    Vehicle:
    05 PreRunner TRD
    Mostly stock for now, I have added a cb radio, various cheap mods and I plan on adding aftermarket wheels and other items in the future.
    Apaz10, just liked mentioned up above my post by other members, it is probably just condensation. Could also be coolant, probably not but should check the dipstick.

    Here is a link on the same subject, review both threads. http://www.tacomaworld.com/forum/general-automotive/76088-help-oil-change.html#post1450847
     
  11. Feb 20, 2010 at 8:36 PM
    #11
    hendooman

    hendooman The Stroker Ace

    Joined:
    Mar 6, 2009
    Member:
    #14421
    Messages:
    3,022
    Gender:
    Male
    First Name:
    Jeff
    KC
    Vehicle:
    2015 TRD PRO 4Runner
    if it just on the cap your ok, like Chris said, just change oil more often. I get it from short file mile commutes, I suspect the extreme colds dont help either. I had oil tested and it was fine.
     
  12. Feb 20, 2010 at 8:36 PM
    #12
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

    Joined:
    Jun 7, 2009
    Member:
    #18122
    Messages:
    12,235
    Gender:
    Male
    Vehicle:
    '09 FourDubDee TRD OR
    A-TRUCK, Fat Kid in the Bed, Custom Pinstriping, Ported and Polished Muffler Bearing, Hi-Performance Bed Mat
    No need to freak out yet. This isn't something huge.

    It's called "cold water sludge" and it comes from moisture condensing in the crankcase in cold weather, and trips in the truck too short to allow the moisture to boil off.

    Estimates vary, but the conventional wisdom is your engine needs to spend 20 minutes or so at operating temp to boil off condensed moisture completely.

    Take a long trip every 2 or 3 trips, or start giving the engine some time to warm up. Should at least decrease the problem.
     
  13. Feb 20, 2010 at 8:37 PM
    #13
    Fortech

    Fortech Well-Known Member

    Joined:
    Mar 31, 2008
    Member:
    #5636
    Messages:
    878
    Gender:
    Male
    CANADA
    Vehicle:
    2005 Toyota Tacoma TRD OR
    Bilstein 5100's, rear TSB, Firestone bags
    Nobody said anything about milky oil. He is referring to the milky substance that collects on the underside of the filler cap due to the long, plastic filler tube being surrounded by cold air.
     
  14. Feb 20, 2010 at 8:38 PM
    #14
    dirthawker1313

    dirthawker1313 Well-Known Member

    Joined:
    Jul 30, 2007
    Member:
    #2253
    Messages:
    294
    Gender:
    Male
    x2
    my wifes 99 tahoe had "condensation" on her oil cap and filler neck. it turned out to be an intake manifold gasket that was leaking coolant in to the motor. its not normal to have "condensation" in the motor. once i fixed the leak the "condensation" went away.
     
  15. Feb 20, 2010 at 8:45 PM
    #15
    Vectorit

    Vectorit Well-Known Member

    Joined:
    Feb 3, 2010
    Member:
    #30673
    Messages:
    53
    Gender:
    Male
    Southern California
    Vehicle:
    TRD SR5
    King coil overs, Total Chaos uppers, Snugtop
    Condensation, water, or coolant is not a "normal" situation to just shrug off. Water, and especially coolant will tear up crank case bearings super quick.
     
  16. Feb 20, 2010 at 8:48 PM
    #16
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

    Joined:
    Jun 7, 2009
    Member:
    #18122
    Messages:
    12,235
    Gender:
    Male
    Vehicle:
    '09 FourDubDee TRD OR
    A-TRUCK, Fat Kid in the Bed, Custom Pinstriping, Ported and Polished Muffler Bearing, Hi-Performance Bed Mat
    Agreed, but this isn't from some mechanical defect in his engine. It's how he's using the vehicle, and it's essentially unavoidable with that type of use.

    There's a reason we always hear about engines doing their best at operating temp...it prevents this kind of stuff.
     
  17. Feb 20, 2010 at 8:51 PM
    #17
    OffroadToy

    OffroadToy The dog did it...I swear!

    Joined:
    Sep 12, 2009
    Member:
    #22680
    Messages:
    5,049
    Gender:
    Male
    High Desert
    Vehicle:
    07 TRD OFFROAD 4x4 VSC/TRAC/DAC/HAC
    snugtop supersport canopy, black westin bullbar/tube steps, piaa offroad lights, weathertech floor mats, oem bed mat, trd seat covers, avs inchannel vent visors, 2" suspension lift, front diff drop, rear differential breather extension, oil filter drain hose, a/c drain hose extention & reroute, front window tint, cat theft protection plate, tailgate clamp mod, xpel headlight/foglight protecters, oem block heater, bfg 265/75R/16 a/t k/o's, cabin air rodent protection screen, rcbs illuminated 4X4 switch mod
    ^^What Cris4x4 said. Also, I've read the condensation forms due to the plastic fill tube...perfectly normal with our trucks and nothing to worry about.
     
  18. Feb 20, 2010 at 8:56 PM
    #18
    BlueT

    BlueT Well-Known Member

    Joined:
    Mar 30, 2009
    Member:
    #15341
    Messages:
    4,537
    Gender:
    Male
    NorthEast
    Vehicle:
    07 Dbl Cab LB with LSD
    I moded 1999 Taco so much it had turned to Land Cruiser
    :D sweet mother of mercy

    its a normal thing to have this under the cap. on Tacoma 4L V6 . filler neck is too long so it never heats up, synthetic makes it worse since engine runs cooler'
     
  19. Feb 20, 2010 at 9:09 PM
    #19
    Vectorit

    Vectorit Well-Known Member

    Joined:
    Feb 3, 2010
    Member:
    #30673
    Messages:
    53
    Gender:
    Male
    Southern California
    Vehicle:
    TRD SR5
    King coil overs, Total Chaos uppers, Snugtop
    hmmm, OK, well if that's what "the factory" tells ya then it must be OK right?

    Long oil fill tube? you are kidding right?

    To me I don't see this as something worthy of debate.

    Water/condensation + oil = damage.


    The OP should have everything checked out none the less.
     
  20. Feb 20, 2010 at 9:09 PM
    #20
    REVHARD25

    REVHARD25 Well-Known Member

    Joined:
    Mar 5, 2008
    Member:
    #5113
    Messages:
    842
    Gender:
    Male
    so cal
    Vehicle:
    RUGGED TRAIL PACKAGE
    Tint on front windows. Dnx7120 kenwood. Rear tsb springs. Wet okoles seat covers UWS truck box Weathertech floor mats TSB floor mat hook grommets Satoshi grill AFE drop in filter Fumoto drain valve Bed mat
    Wait stop what your doing!! this is a tsb and recall....NOT ...its no big deal ...take the tacoma on a road trip and the condensation will go away:D
     
To Top