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. Dec 25, 2011 at 11:02 PM
    #101
    toyotatacomaTRD

    toyotatacomaTRD Senior Member

    Joined:
    Sep 16, 2010
    Member:
    #43379
    Messages:
    4,356
    Gender:
    Male
    Pacific Northwest
    Vehicle:
    2018 OR DCSB 4x4
    I think it may have to do with the temperature outside more than the length of the trip. I notice it during the winter, but not in the summer. It doesn't seem like any issue as this is well documented on this site. I am not worried about it at all.
     
  2. Dec 26, 2011 at 3:13 AM
    #102
    outiar

    outiar Member

    Joined:
    Dec 25, 2011
    Member:
    #69344
    Messages:
    10
    Gender:
    Male
    montana
    Vehicle:
    12 DCSB TRD Off Rd 4x4 AT
    Thanks for the reassurance. I have operated equipment of most shapes and sizes burning most types of fuel in any imaginable condition. Only once have I seen condensation in the filler cap. Ironically it was my first car, an old Toyota van. Head. gasket. Unfortunately, if the cause is the plastic neck, it is sub-par engineering in an otherwise above average piece of equipment.
     
  3. Dec 26, 2011 at 3:34 AM
    #103
    MI4x4Toy

    MI4x4Toy The slowest build EVER!!

    Joined:
    Jun 20, 2011
    Member:
    #58586
    Messages:
    599
    Gender:
    Male
    First Name:
    Matt
    MI
    Vehicle:
    '13 BLK DCSB SR5 4x4
    Mud Flap Trim!

    Our forklifts at work do this because of what Chris just said. Need to run that baby good!
     
  4. Dec 26, 2011 at 3:53 AM
    #104
    BUZZCUT

    BUZZCUT Well-Known Member

    Joined:
    Mar 6, 2011
    Member:
    #52417
    Messages:
    669
    Gender:
    Male
    Georgia
    Vehicle:
    2007 AC TRD OFFROAD

    What leads you to this conclusion? :popcorn:
     
  5. Dec 26, 2011 at 3:58 AM
    #105
    outiar

    outiar Member

    Joined:
    Dec 25, 2011
    Member:
    #69344
    Messages:
    10
    Gender:
    Male
    montana
    Vehicle:
    12 DCSB TRD Off Rd 4x4 AT
    Tell me that you believe moisture accumulation anywhere in the engine is a sign of brilliant quality control.
     
  6. Dec 26, 2011 at 4:25 AM
    #106
    BUZZCUT

    BUZZCUT Well-Known Member

    Joined:
    Mar 6, 2011
    Member:
    #52417
    Messages:
    669
    Gender:
    Male
    Georgia
    Vehicle:
    2007 AC TRD OFFROAD
    It happens on any motor operated short times in cold weather. This was taught in my autoshop class 30-40 years ago. derp
     
  7. Dec 26, 2011 at 5:17 AM
    #107
    outiar

    outiar Member

    Joined:
    Dec 25, 2011
    Member:
    #69344
    Messages:
    10
    Gender:
    Male
    montana
    Vehicle:
    12 DCSB TRD Off Rd 4x4 AT
    30-40 years ago, there was a vent on top of your valve cover to deal with moisture and pressure. Nowadays crankcase emission standards do not allow a simple breather.
    Also, you live in Georgia. you may have lived elsewhere in the past. Ive lived along the canadian border most of my life and for 5 months a year, 32 is hot. Somehow, Fords, dodges, Chevys,caterpillar,Cummins, international, Deere, agco, Volkswagen, Honda, New Holland, and even old Waukeshas haven't done this. diesel, gas, svo, propane.
    Also, operating the taco for a short duration in cold weather did not apply to my v6. Only long distance driving in slightly below freezing weather. See my previous post regarding timeframe and mileage.
    The question is not whether an engine creates moisture, the question is how the manufacturer decides to design a system where moisture is discharged not a system where moisture is allowed to accumulate.
    I am simply surprised by this oversight by Toyota's engineers. Most likely, in testing the plastic neck was known to produce condensation buildup and it was too expensive to use a different material.
     
  8. Dec 26, 2011 at 5:31 AM
    #108
    WV150

    WV150 Well-Known Member

    Joined:
    Apr 26, 2011
    Member:
    #55600
    Messages:
    360
    Gender:
    Male
    South Carolina
    Trifecta Tonneau Cover
    Think about this.Where I worked I had a large air compressor and used Pennzoil 10W30 in the compressor crankcase.This was a air cooled compressor.Every 3 months I had to change the oil because it got very milky.The compressor only ran for about 30 minutes a day.The only thing I did to correct this problem was change to Pennzoil 15W40.I think the heavier oil would cling to metal parts to avoid condensation.You may want to stick with 5W30.I guess what I am trying to point out is that condensation occurs even when there is no liquid cooling system.Even a low gas tank will condensate on the inside.Since you can not completely fill the engine with oil you will get some condensation.The old 300 six cyl ford engines did this a lot and it never hurt them after two or three hundred thousand miles and I dought it will hurt these V6s.
     
  9. Dec 26, 2011 at 5:58 AM
    #109
    samsung

    samsung Well-Known Member

    Joined:
    Jan 2, 2011
    Member:
    #48601
    Messages:
    1,149
    Gender:
    Male
    First Name:
    George
    Sugar Land, Texas
    Vehicle:
    2011 PreRunner doublecab TRD Offroad
    undercover lid/Ipod integration kit/Pop n lock/bed rug, fumoto drain valve, full piping Wet Okole covers, Blacked out badges, Lamin-X fog light cover yellow, window tint, ARB deluxe bumper with fog light kit,DSM UCA'S,3 support shrockworks sliders,complete OME lift with 886X coil and dakar leaf spring with 3 degree axle shims and center pin lenghtener,warn VR10000 winch,amsteele blue synthetic rope, daystar winch isolator, daystar delrin rollers, IPF 900xs Extreme Driving H9 Kit 900XSD (900XSD),Horn on fire with shot Penning,
    I noticed this condition when i did my first oil change. i switched to mobile-1 synthetic @ about 600 miles. my truck is almost a year old with only a bit over 2k miles on it. of course i did not check the bottom of the filler cap since i changed my oil back @ 600 miles. ( i check my dipstick all the time) until this morning when i read this thread. it looks clean, but when you wipe it off with a white rag you can definetely see the yellow stuff on the white rag, but i don't see any deposit on the cap it self until i wipe it off.
     
  10. Dec 26, 2011 at 6:47 AM
    #110
    06SR5canada

    06SR5canada Well-Known Member

    Joined:
    Jul 22, 2011
    Member:
    #60338
    Messages:
    647
    Gender:
    Male
    Saskatchewan
    Vehicle:
    06 dblcab SR5
    2ndary air filter removed, flowmaster 40
    Condensation will always migrate to the highest point in the system, being the fill cap.
     
  11. Dec 26, 2011 at 8:14 AM
    #111
    JKD

    JKD Well-Known Member

    Joined:
    Jun 9, 2009
    Member:
    #18207
    Messages:
    2,019
    Gender:
    Male
    It has no negative effect, so why is it sub-par? They're not going to waste money on an electric filler-neck heater or porting exhaust to a heating manifold around the filler neck just to get rid of something that doesn't have any effect on engine performance or wear.
     
  12. Dec 26, 2011 at 8:21 AM
    #112
    ecoterragaia

    ecoterragaia Everyone lives downstream.

    Joined:
    Jan 23, 2011
    Member:
    #49786
    Messages:
    1,802
    Gender:
    Male
    Central Virginia
    Vehicle:
    '06 RC, 4X4, 5 speed
    My '07 Volkswagen did this. Its nothing to worry about.

    Combustion always produces water vapor. Crankcase blow by is produced when exhaust gases make it past the piston ring during the compression stroke, so it makes sense that this water vapor would exist in the valve cover. Most valve covers are made of plastic nowdays to save weight and cost, and plastic does not conduct heat as well as metal. Condensation of water vapor on the cooler plastic surface is inevitable, and does not represent subpar engineering. It is simply the same thing that always happens inside the crankcase and valve cover, but it happens more quickly and is concentrated on the surfaces that are cooler than the rest of the engine.
     
  13. Dec 26, 2011 at 8:36 AM
    #113
    BUZZCUT

    BUZZCUT Well-Known Member

    Joined:
    Mar 6, 2011
    Member:
    #52417
    Messages:
    669
    Gender:
    Male
    Georgia
    Vehicle:
    2007 AC TRD OFFROAD

    Wow obsess much?

    For those who feel this is unacceptable trade it before it blows.

    FYI they haven't had road draft tubes since the early to mid sixties.
     
  14. Dec 26, 2011 at 10:11 AM
    #114
    JKD

    JKD Well-Known Member

    Joined:
    Jun 9, 2009
    Member:
    #18207
    Messages:
    2,019
    Gender:
    Male
    By the way, the crankcase is fully vented on the Tacoma engine. The entire reason that the deposits form is because it is cool enough there to condense water and oil vapor together.

    On an older car of mine, the valve covers were just stamped steel, and in cold weather they'd be coated on the inside. Never had an oil related problem on that engine.
     
  15. Dec 27, 2011 at 6:10 AM
    #115
    BBY2KS2K

    BBY2KS2K Jon Stewart / Stephen Colbert 2016

    Joined:
    Jan 6, 2010
    Member:
    #28886
    Messages:
    137
    Gender:
    Male
    First Name:
    Jason
    Lake Stevens, WA
    Vehicle:
    2005 PreRunner DC
    16x7.5 TRD Bronze "beadlock" wheels without the beadlocks w/ 265 70 16 Bridgestone Revo II tires (non-winter) 16x8 KMC Enduro w/ 265 70 16 Bridgestone Blizzak DMV-1 tires (winter) McGard Spline Drive lugs and locks, Satoshi Grill, BLHM, blacked out badges, Aries side steps, Smittybilt light bar with PIAA 540 plasma ion fogs, Aero-Turbine muffler
    Ah, a thread brought back from the dead. My truck still runs like a top. Over the summer months this stuff goes away and as the weather gets cooler, it comes back. :) Nothing to sweat.
     
  16. Dec 27, 2011 at 6:30 AM
    #116
    Chris(NJ)

    Chris(NJ) Well-Known Member

    Joined:
    Jan 21, 2010
    Member:
    #29777
    Messages:
    4,101
    Gender:
    Male
    First Name:
    Chris
    Usually in Central Jersey
    Vehicle:
    08 Indigo 4x4 DC OR
    Mods are currently being changed .....
    Maybe, but maybe not. Whats considered short? I drive 9 miles to work and on days off, a lot of drives are only across town...3 miles. I've driven 400 miles this month and I still have not developed any of the stuff outlined in this thread.
     
  17. Dec 27, 2011 at 6:33 AM
    #117
    DEEVON911

    DEEVON911 Semi-Pro

    Joined:
    Apr 11, 2010
    Member:
    #35030
    Messages:
    15,192
    Gender:
    Male
    First Name:
    Dave
    Bethel Park, PA. Burb of da Burgh.
    Vehicle:
    2010 MGM Mostly Stock Off-Road 4x4
    TRD Cat-back Exhaust. Semi-Debadged. Trimmed down stock Antenna. Weathertech vent visors. TRD FJ Cruiser Center Cap Wheel Mod. 265/75/16 Firestone Destination A/T,s . Inverter tapped into for outlet in cab. Tacomaworld sticker which adds 5 hp.
    I would consider any trip that does not get your engine to full operating temp. that to me would be a short trip. Anyway no worries with this, obviosly the OP nor anyone else has had any problems with this, so its nothing to worry about.
     
  18. Dec 27, 2011 at 6:34 AM
    #118
    Namyo

    Namyo -

    Joined:
    Apr 28, 2010
    Member:
    #36165
    Messages:
    14,130
    Gender:
    Male
    mines looks like that too :anonymous:
     
  19. Dec 27, 2011 at 6:36 AM
    #119
    Chris(NJ)

    Chris(NJ) Well-Known Member

    Joined:
    Jan 21, 2010
    Member:
    #29777
    Messages:
    4,101
    Gender:
    Male
    First Name:
    Chris
    Usually in Central Jersey
    Vehicle:
    08 Indigo 4x4 DC OR
    Mods are currently being changed .....

    True.

    Although I wonder if anyone w/ the condensation has had an oil analysis done? Just out of curiousity, to see how it comes back.
     
  20. Dec 27, 2011 at 6:42 AM
    #120
    DEEVON911

    DEEVON911 Semi-Pro

    Joined:
    Apr 11, 2010
    Member:
    #35030
    Messages:
    15,192
    Gender:
    Male
    First Name:
    Dave
    Bethel Park, PA. Burb of da Burgh.
    Vehicle:
    2010 MGM Mostly Stock Off-Road 4x4
    TRD Cat-back Exhaust. Semi-Debadged. Trimmed down stock Antenna. Weathertech vent visors. TRD FJ Cruiser Center Cap Wheel Mod. 265/75/16 Firestone Destination A/T,s . Inverter tapped into for outlet in cab. Tacomaworld sticker which adds 5 hp.
    Not sure, but it would all depend on when you took the oil out. If you take it out warm or hot, then moisture is prob "cooked" off. If cold, then you might get something else. Probably not evern worth it to check.
     

Products Discussed in

To Top