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

Abnormal manual transmission heat?

Discussion in '1st Gen. Tacomas (1995-2004)' started by clothar, Jul 19, 2011.

  1. Jul 19, 2011 at 9:22 PM
    #1
    clothar

    clothar [OP] Well-Known Member

    Joined:
    Feb 11, 2011
    Member:
    #51004
    Messages:
    46
    Gender:
    Male
    Vancouver
    Vehicle:
    98 V6 4WD Xtra Cab Limited
    Hi Guys,
    I’m a long time reader first time writer so there is a good chance that this is posted in the wrong place.
    So, I’m the third owner of a 5 speed 1998 tacoma 4X4 Xtracab Limited with 165k miles on it. It’s one hell of a good looking truck, but I think it was neglected in the fluids department (story for another time).
    I noticed when I was driving it the other day that the shifter knob was warm and the metal shaft part of the shifter was even warmer. I went under the truck and checked the transmission casing's temperature and it was hot like touching part of the engine hot. I also noticed the transmission casing was scaly with many surface cracks it that looked the metal was really hot then cooled really quickly. See picture.

    I changed the transmission gear oil and used the recommended API GL-5 75W 90 synthetic oil. The old transmission oil looked like metallic paint there was a lot of small yellow fine particles in the oil. But I figured that this oil has probably never been changed so if I kind of expected it.

    I’m still having the same problem after about 30-45 minutes of driving the stick shift starts to warm up and transmission casing is really hot.
    Is it normal for a manual transmission to generate this much heat? Any other thoughts?
    Thanks guys,
    Ryan

    P7190022.jpg
     
  2. Jul 19, 2011 at 9:37 PM
    #2
    scocar

    scocar Scouting the perimeter for weakness

    Joined:
    Nov 11, 2009
    Member:
    #25814
    Messages:
    31,278
    Gender:
    Male
    First Name:
    Dick
    In close proximity to an undisclosed location
    Vehicle:
    2015 DCLB 4x4 SR5
    Back to square one after the 2001. So...
    I think it is probably normal, unless you have an exhaust leak blowing on it. The pipe and cat are right next to the tranny, and these radiate a shitload of heat anyway. I can't say that I've noticed my stick getting as hot as you mention, but this is a subjective thing.

    The condition of your tranny oil was most troubling. I think if it looked that bad, I would have opted to just run some non-synthetic through it for a short period to get out more crap and clean it up a bit, then change again with synth.

    these things are built to last, so I wouldn't lose too much sleep over it unless you actually start having issues with shifting.
     
  3. Jul 19, 2011 at 9:40 PM
    #3
    kmok

    kmok Plastidipped ma Hootus!

    Joined:
    Jul 18, 2008
    Member:
    #8007
    Messages:
    2,350
    Gender:
    Male
    First Name:
    Kyle
    Columbus, Ohio
    Vehicle:
    2005 Subaru Outback XT 5MT
    I've never noticed my m/t get real hot before so I'm not sure how normal that is. The yellow particles doesn't sound good. Also you don't want the GL-5 in the m/ts on these trucks. The only m/t fluid I've found that doesn't have the GL-5 on it was Redline MT-90 and possibly amsoil.
     
  4. Jul 19, 2011 at 10:36 PM
    #4
    Digiratus

    Digiratus Adventurer

    Joined:
    Mar 26, 2010
    Member:
    #34006
    Messages:
    13,698
    Gender:
    Male
    First Name:
    Mike
    Roaming the PNW
    Vehicle:
    The RedHead
    2002 XtraCab TRD 4x4 Auto Trans With Lots of Mods King Extended Travel COs Camburg Uniball UCAs Alcan Custom 8-Leaf Rear Spring Packs Fox 2.0 Resi Rear Shocks FrankenFab Rear Shock Relocate All-Pro U-bolt Flip w/Timbren bumps Toytec 1" Extended Shackle 4.88 Nitro Gears ARB Front Locker ARB Twin Compressor 15x8 D Window Steelies 33" BFG KM2s Limited Edition Relentless Front Bumper Smittybilt X2O 10K Winch Rugged Ridge 3" LED Pods w/Amber covers Mini D2S Projectors XB35 Ballasts + 4500K Bulbs Badland Sliders FrankenFab Tire Carrier Swingout bumper w/kitchen BudBuilt Front & Bellypan Skids BAMF Rear Diff Skid Whynter 65 qt. Fridge/Freezer CVT Mt Bachelor RTT Badland Custom Bed Rack GM 140 amp alternator Dual Northstar 24F AGM batteries BlueSea 7622 ML-ACR Battery controller Peak DBI Dual Battery Voltage Monitor Magnaflow 18" Muffler Braided Steel Brake Lines AFE Pro Dry S air filter ScanGauge II OBDII Scanner Kenwood TM-71A Dual Band Ham Radio Larson 70CM/2M Antenna Uniden 520xl CB radio 3' Firestik Adjustable tip antenna Pioneer DEH-P9400BH HU Alpine Amps & Type R components (F) and coaxials (R) Wet Okole Seat Covers Weathertech Digital Liners Deck Plate Mod 1" Diff Drop Carrier Bearing Drop
    ^^^^^ This

    I think I read that GL-5 has components that can break down some of the metals in the tranny. Redline MTL or MT90 are excellent GL-4 choices.

    The sychros are brass I think, a yellow metal.
     
  5. Jul 19, 2011 at 11:29 PM
    #5
    scocar

    scocar Scouting the perimeter for weakness

    Joined:
    Nov 11, 2009
    Member:
    #25814
    Messages:
    31,278
    Gender:
    Male
    First Name:
    Dick
    In close proximity to an undisclosed location
    Vehicle:
    2015 DCLB 4x4 SR5
    Back to square one after the 2001. So...

    You know, I keep hearing this GL5 business, but the owner's manual does in fact say GL5 or GL4. Has anyone seen some definitive explanation of this GL5-is-bad-for-these-trucks theory?

    Ben? Where are you, Ben? Beuller? Allan? Steve?

    BTW, I am running MT90 too...
     
  6. Jul 20, 2011 at 6:24 AM
    #6
    Enigmaaron

    Enigmaaron All your soul are belong to us

    Joined:
    Jul 6, 2009
    Member:
    #19337
    Messages:
    5,257
    Gender:
    Male
    PA
    Vehicle:
    1st gen superiority
    I've noticed the shaft of my shift lever getting hot on occasion. Usually it gets warm after driving for a bit. If I'm doing 75-80 on the highway for a stretch it can get hot, like I don't want to hold my finger against it hot, but I can without getting burnt or anything. I think it's normal.
     
  7. Jul 20, 2011 at 6:38 AM
    #7
    KBToyota

    KBToyota Well-Known Member

    Joined:
    Mar 26, 2011
    Member:
    #53765
    Messages:
    391
    Gender:
    Male
    First Name:
    Kurt
    Spotsy, Virginia
    Vehicle:
    96 Tacoma V6 4X4
    OME 883, 5100 all around, Wheelers 3 leaf progressive aal
    I have noticed that mine as gets hot. I changed the fluid and the old fluid was in good condition, and it is still warm on the shifter.

    If you had a lot of yellow metal in the oil that is what the syncros are made of... Does it shift hard, grind, pop out of gear? Is so you may be looking at a tranny rebuild.

    If it still shifts smooth and is only warm to the touch your probably fine, looks like a lot of peoples are warm without aany problems.
     
  8. Jul 20, 2011 at 8:43 AM
    #8
    FishinTaco

    FishinTaco Well-Known Member

    Joined:
    Mar 24, 2011
    Member:
    #53612
    Messages:
    252
    Gender:
    Male
    First Name:
    D'Arcy
    Sudbury, ON
    Vehicle:
    TRD 4x4 5spd
    5100's all the way around, OME 880's and AAL, BF's 265/75R16. Switched beds from Stepside to Fleetside
    My 98' got really hot, and my new to me 2002 gets smokin' hot. I can actually feel hot air coming out of the collar of the shift cover after driving it a while. I'm told it's pretty normal. Hope this helps.
     
  9. Jul 20, 2011 at 9:03 AM
    #9
    clothar

    clothar [OP] Well-Known Member

    Joined:
    Feb 11, 2011
    Member:
    #51004
    Messages:
    46
    Gender:
    Male
    Vancouver
    Vehicle:
    98 V6 4WD Xtra Cab Limited
    Hey Guys,
    Thanks for all the comments. Looks like this is nothing for me to worry about. I think I'll change the transmission fluid in the near future to something better quality and go the GL-4 route (If I can find some). I don't want to start the GL-4 GL-5 debate it's been done to death.
    Thanks again everyone.
     
  10. Jul 20, 2011 at 10:07 AM
    #10
    KBToyota

    KBToyota Well-Known Member

    Joined:
    Mar 26, 2011
    Member:
    #53765
    Messages:
    391
    Gender:
    Male
    First Name:
    Kurt
    Spotsy, Virginia
    Vehicle:
    96 Tacoma V6 4X4
    OME 883, 5100 all around, Wheelers 3 leaf progressive aal
    I looked and the GL-4 is tough to find, best bet may be an amsoil dealer.
     
  11. Jul 20, 2011 at 10:21 AM
    #11
    Digiratus

    Digiratus Adventurer

    Joined:
    Mar 26, 2010
    Member:
    #34006
    Messages:
    13,698
    Gender:
    Male
    First Name:
    Mike
    Roaming the PNW
    Vehicle:
    The RedHead
    2002 XtraCab TRD 4x4 Auto Trans With Lots of Mods King Extended Travel COs Camburg Uniball UCAs Alcan Custom 8-Leaf Rear Spring Packs Fox 2.0 Resi Rear Shocks FrankenFab Rear Shock Relocate All-Pro U-bolt Flip w/Timbren bumps Toytec 1" Extended Shackle 4.88 Nitro Gears ARB Front Locker ARB Twin Compressor 15x8 D Window Steelies 33" BFG KM2s Limited Edition Relentless Front Bumper Smittybilt X2O 10K Winch Rugged Ridge 3" LED Pods w/Amber covers Mini D2S Projectors XB35 Ballasts + 4500K Bulbs Badland Sliders FrankenFab Tire Carrier Swingout bumper w/kitchen BudBuilt Front & Bellypan Skids BAMF Rear Diff Skid Whynter 65 qt. Fridge/Freezer CVT Mt Bachelor RTT Badland Custom Bed Rack GM 140 amp alternator Dual Northstar 24F AGM batteries BlueSea 7622 ML-ACR Battery controller Peak DBI Dual Battery Voltage Monitor Magnaflow 18" Muffler Braided Steel Brake Lines AFE Pro Dry S air filter ScanGauge II OBDII Scanner Kenwood TM-71A Dual Band Ham Radio Larson 70CM/2M Antenna Uniden 520xl CB radio 3' Firestik Adjustable tip antenna Pioneer DEH-P9400BH HU Alpine Amps & Type R components (F) and coaxials (R) Wet Okole Seat Covers Weathertech Digital Liners Deck Plate Mod 1" Diff Drop Carrier Bearing Drop
  12. Jul 20, 2011 at 10:35 AM
    #12
    scocar

    scocar Scouting the perimeter for weakness

    Joined:
    Nov 11, 2009
    Member:
    #25814
    Messages:
    31,278
    Gender:
    Male
    First Name:
    Dick
    In close proximity to an undisclosed location
    Vehicle:
    2015 DCLB 4x4 SR5
    Back to square one after the 2001. So...
    I found the Redline at a local performance-oriented auto-parts store (for anyone in Sac, Tognotti's).

    Perhaps the Redline website has dealer locator info? Likewise for Amsoil?
     
  13. Jul 20, 2011 at 10:38 AM
    #13
    kmok

    kmok Plastidipped ma Hootus!

    Joined:
    Jul 18, 2008
    Member:
    #8007
    Messages:
    2,350
    Gender:
    Male
    First Name:
    Kyle
    Columbus, Ohio
    Vehicle:
    2005 Subaru Outback XT 5MT
    I found Redline at Jegs
     
  14. Jul 20, 2011 at 10:43 AM
    #14
    Stuardoslls

    Stuardoslls Well-Known Member

    Joined:
    Mar 21, 2010
    Member:
    #33688
    Messages:
    224
    Gender:
    Male
    First Name:
    Stuart
    Hawthorne, CA
    Vehicle:
    2012 Double Cab 4x4 TRD Offroad Package
    Just Rims and Tires: FJ Cruiser 16" wheels w/ 265/75/16 BFG KO2's
    When I was putting my new headers on my truck. I noticed similar surface cracks on my transmission... is this normal?
     
  15. Jul 20, 2011 at 10:49 AM
    #15
    JKD

    JKD Well-Known Member

    Joined:
    Jun 9, 2009
    Member:
    #18207
    Messages:
    2,016
    Gender:
    Male
    Even without the internal friction generating heat, the mtx will get hot simply because it is thermally linked to the engine. Like the handle of a cast iron skillet.
     
  16. Jul 20, 2011 at 11:02 AM
    #16
    scocar

    scocar Scouting the perimeter for weakness

    Joined:
    Nov 11, 2009
    Member:
    #25814
    Messages:
    31,278
    Gender:
    Male
    First Name:
    Dick
    In close proximity to an undisclosed location
    Vehicle:
    2015 DCLB 4x4 SR5
    Back to square one after the 2001. So...
    Yeah, nice analogy! It is basically a heat sink...
     
  17. Jul 20, 2011 at 11:50 AM
    #17
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,725
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours

    Yes, it's consistant with the cast metal process.
     
  18. Jul 20, 2011 at 12:40 PM
    #18
    clothar

    clothar [OP] Well-Known Member

    Joined:
    Feb 11, 2011
    Member:
    #51004
    Messages:
    46
    Gender:
    Male
    Vancouver
    Vehicle:
    98 V6 4WD Xtra Cab Limited
  19. Jul 20, 2011 at 9:15 PM
    #19
    Digiratus

    Digiratus Adventurer

    Joined:
    Mar 26, 2010
    Member:
    #34006
    Messages:
    13,698
    Gender:
    Male
    First Name:
    Mike
    Roaming the PNW
    Vehicle:
    The RedHead
    2002 XtraCab TRD 4x4 Auto Trans With Lots of Mods King Extended Travel COs Camburg Uniball UCAs Alcan Custom 8-Leaf Rear Spring Packs Fox 2.0 Resi Rear Shocks FrankenFab Rear Shock Relocate All-Pro U-bolt Flip w/Timbren bumps Toytec 1" Extended Shackle 4.88 Nitro Gears ARB Front Locker ARB Twin Compressor 15x8 D Window Steelies 33" BFG KM2s Limited Edition Relentless Front Bumper Smittybilt X2O 10K Winch Rugged Ridge 3" LED Pods w/Amber covers Mini D2S Projectors XB35 Ballasts + 4500K Bulbs Badland Sliders FrankenFab Tire Carrier Swingout bumper w/kitchen BudBuilt Front & Bellypan Skids BAMF Rear Diff Skid Whynter 65 qt. Fridge/Freezer CVT Mt Bachelor RTT Badland Custom Bed Rack GM 140 amp alternator Dual Northstar 24F AGM batteries BlueSea 7622 ML-ACR Battery controller Peak DBI Dual Battery Voltage Monitor Magnaflow 18" Muffler Braided Steel Brake Lines AFE Pro Dry S air filter ScanGauge II OBDII Scanner Kenwood TM-71A Dual Band Ham Radio Larson 70CM/2M Antenna Uniden 520xl CB radio 3' Firestik Adjustable tip antenna Pioneer DEH-P9400BH HU Alpine Amps & Type R components (F) and coaxials (R) Wet Okole Seat Covers Weathertech Digital Liners Deck Plate Mod 1" Diff Drop Carrier Bearing Drop
    Good excuse to come south for a visit to Bellingham. Check out the Carquest Auto parts store there. I'll bet they will have the Redline Oil products on their shelves. The store in Renton does, so they will at least be able to get if for you if they don't have it.

    http://national.citysearch.com/profile/10822943/bellingham_wa/carquest_auto_parts.html
     
  20. Dec 22, 2015 at 5:14 PM
    #20
    clutchplate

    clutchplate New Member

    Joined:
    Dec 22, 2015
    Member:
    #172900
    Messages:
    1
    Gender:
    Male
    Vehicle:
    1996 Toyota 4runner
    I don't have Tacoma but a 96 Toyota 4runner. My gear shift shaft would get very hot while driving. Hot enough that I didn't want to keep my hand on it too long. The other day I replaced my gear oil and while driving today I noticed that the gear shift shaft was luke warm at best. It's got to be the new oil protecting the gears and keeping the friction to a minimum. I used Sta-Lube 85-90 gl-4 from Napa Auto Parts. One gallon was $35+tx. It seems to be a bit thick especially in the winter. Takes 1-2 miles of driving to heat up the oil and then it shifts easy. Starting off with something a little thicker than what's recommend will probably make it last longer before next change. I will keep my eye on the temperature of the stick, it may be an indication when I need to replace oil. No synthetic oils for me, all conventional and mileage is at 404,000.
     
    Digiratus likes this.
To Top