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Thread: Fluid leaking

  1. #1
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    Default Fluid leaking

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    Hello folks, what's going on here? The bolt is tight.
    Thanks
    2001 Volvo V70XC/AWD/Auto/Turbo/164kMiles (Maroon)
    2001 Volvo XC70/AWD/Auto/Turbo/151kMiles (Brown)
    2006 Toyota Sienna LE/AWD 124K (Green)
    --------------------------------------------------------------------------------------
    1985 BMW (E23) 735i(US)/AUTO/209K Miles (Parked since 2011)
    1997 Mazda MPV/AUTO/4WD/173K Miles (Parked since 2008)
    2002 Subaru Outback L.L. Bean/3.0/131K/AWD (Parked since 2017)

  2. #2
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    Jun 2013
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    Northeast
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    That looks like one of your transmission fluid lines. The other end probably connects to your transmission cooler. I took that line off (10mm bolt?) several times when trying to fix my tranny. If memory serves, there's a small rubber washer that fits on the end of the tube when you insert it into the transmission case. If that washer wears out, you could get leaks.

    Have you or anyone recently removed and re-installed that line? Or maybe something bumped into it somehow? I don't know if after years of having a good tight seal it could start leaking but maybe so.
    2007 XC70, 206,000 miles
    2002 V70XC, 130,000 miles, parts car

  3. #3
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    Feb 2010
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    Yep. ATF cooler line. Thereís a small o-ring there. O-rings get old, and shrink, crack, or whatever, then leak.

    So, clean the area, pull the line out, replace the o-ring. Itís probably a .25 part, but Volvo will charge you about $4.00 for it. I would pay that just to know I had the right size part.
    Current Fleet:
    2016 Tundra Crewmax 4WD 1794
    2005 MB S600 (100K, Michelin AS3+, M1 0W40)
    2002 V70-XC (258K, Castrol Edge 0W40)
    2002 V70-T5 (208K, IPD bars, Bilsteins)
    2001 V70-T5 (92K)
    1932 Packard Sedan (straight 8, dual sidemounts, original paint and interior, Shell Rotella 15W40)

  4. #4
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    Default

    Quote Originally Posted by Xfingers View Post
    That looks like one of your transmission fluid lines. The other end probably connects to your transmission cooler. I took that line off (10mm bolt?) several times when trying to fix my tranny. If memory serves, there's a small rubber washer that fits on the end of the tube when you insert it into the transmission case. If that washer wears out, you could get leaks.

    Have you or anyone recently removed and re-installed that line? Or maybe something bumped into it somehow? I don't know if after years of having a good tight seal it could start leaking but maybe so.
    Few years back, I got the car with a bad transmission. I got it rebuilt before I can drive it.
    I'll replace the seal since the bolt is tight.
    Thanks.
    Last edited by Oka; 05-02-2021 at 12:56 PM.

  5. #5
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    Quote Originally Posted by Astro14 View Post
    Yep. ATF cooler line. Thereís a small o-ring there. O-rings get old, and shrink, crack, or whatever, then leak.

    So, clean the area, pull the line out, replace the o-ring. Itís probably a .25 part, but Volvo will charge you about $4.00 for it. I would pay that just to know I had the right size part.
    Yeah, I should do that from the dealer. Is that line under pressure for when I pull it out. Sure there will be fluid pouring out. When the ring is replaced, just refill the fluid tank, or is there any special procedure to follow?
    Thanks.

  6. #6
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    Mar 2013
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    Hello folks, am struggling to find which ring it is. All am finding are for the cooling, at the radiator. Any help on which ring is at the transmission. Please.
    Thanks.

  7. #7
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    I believe that it is the same size as the cooler line o-rings.

    Might be worth stopping by Volvo and chatting with the parts folks, or, if you've got a second car, easy enough to take this one out, put a plug in place to stop the fluid loss, and take it down to match it up.
    Current Fleet:
    2016 Tundra Crewmax 4WD 1794
    2005 MB S600 (100K, Michelin AS3+, M1 0W40)
    2002 V70-XC (258K, Castrol Edge 0W40)
    2002 V70-T5 (208K, IPD bars, Bilsteins)
    2001 V70-T5 (92K)
    1932 Packard Sedan (straight 8, dual sidemounts, original paint and interior, Shell Rotella 15W40)

  8. #8
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    Mar 2013
    Location
    Anchorage, Alaska
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    Got the ring ($3.51) from the dealer and replaced it.

    For some reason, I decided to check the fluid level since the leak has been since a little after the transmission rebuilt. Considering the period, every little bit adds up to a good amount fluid lost. Though when replacing the ring, about half a cup of fluid may have been lost. When checking the dip stick, it was really very low. Yes, I was careless in this area, I take full responsibility for such carelessness. I mean, the oil is at the tip of the dip stick. I was so mad with myself. The car has been running very smoothly with respect to the automatic gear changes.

    Since there's not much oil in the transmission, I decided to drain/flush whatever is in there.
    1. Would you suggest I only use Volvo make transmission fluid?
    2. Would you have an instruction link you would recommend for me to use?

    Cheers

  9. #9
    Join Date
    Nov 2018
    Location
    CT
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    Based on the recommendations from this forum I’ve been using Toyota IV fluid for my XC70 for nearly 50K miles now. It’s literally the same stuff rebranded, working great, and much cheaper. I picked mine up from a Toyota dealership.

    I’m actually getting ready to do my next flush this weekend. If you haven’t done it before a google search for “Gibbons Method Transmission flush” is your friend.

    https://m.youtube.com/watch?v=7WfY8MQc1B8

  10. #10
    Join Date
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    Toyota T-IV is a good choice. Iíve used it for awhile. I get a discount for a case.

    Iíve also used AMSOIL and Valvoline import multi vehicle (not max life, the import) with success. The important thing is that the fluid meet JWS-3309, which is what this transmission needs.

    Frequent fluid changes help with longevity. Highly recommend them.
    Current Fleet:
    2016 Tundra Crewmax 4WD 1794
    2005 MB S600 (100K, Michelin AS3+, M1 0W40)
    2002 V70-XC (258K, Castrol Edge 0W40)
    2002 V70-T5 (208K, IPD bars, Bilsteins)
    2001 V70-T5 (92K)
    1932 Packard Sedan (straight 8, dual sidemounts, original paint and interior, Shell Rotella 15W40)

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