Oil cooler leak - Page 4
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Thread: Oil cooler leak

  1. #31
    Driver's Ed
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    I just did it yesterday WITHOUT pulling the turbo. It wasn't that bad, just make sure sure you tighten the 3 mounting bolts for the cooler FIRST before you tighten up the hose going from the thermostat to the oil cooler. I didn't and it leaked right where the coolant hose goes into the oil cooler.

    To get to the bolt that holds the hose I referenced above, I used a E10 socket on a wobbly attachment then a 8" extension hooked up to my ratchet. When you go to install the bolt, I wrapped some electrical tape around the head of the bolt once it was in the E10 socket. That helps hold it in the socket when you go to thread it in.

    Any questions, PM me or post here.
    cruzer1026 and plano-doug like this.
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  3. #32
    mjb
    mjb is offline
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    Quote Originally Posted by mbeers View Post
    I just did it yesterday WITHOUT pulling the turbo. It wasn't that bad, just make sure sure you tighten the 3 mounting bolts for the cooler FIRST before you tighten up the hose going from the thermostat to the oil cooler. I didn't and it leaked right where the coolant hose goes into the oil cooler.

    To get to the bolt that holds the hose I referenced above, I used a E10 socket on a wobbly attachment then a 8" extension hooked up to my ratchet. When you go to install the bolt, I wrapped some electrical tape around the head of the bolt once it was in the E10 socket. That helps hold it in the socket when you go to thread it in.

    Any questions, PM me or post here.
    wobbly attachment? do you mean universal socket adapter?

    did you purchase a whole new oil cooler? or did you just replace the 3 seals?
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  4. #33
    4th Gear
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    They probably means a wobble extension/adapter 🙂

    You don't need SnapOn...They sell em at Lowe's/Home Depot/etc...20190311_090423_1552309499904.jpg
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  6. #34
    Driver's Ed
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    Yes it was a Universal Joint, not a wobble socket...my bad

    Another tip is when you go to reinstall the oil cooler, go from the bottom to get it past the block and turbo. I struggled trying to do it from the top, then went underneath the car and it was much easier for some reason.

    I didn't buy a new cooler. I just replaced the internal seal. I also use a new seal for where it attaches to the block and new O ring where it inserts in the other part of the block.
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  7. #35
    Driver's Ed
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    Apr 2019
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    Hello from Europe. I have the exact same engine, on an Opel Astra 1.4 Turbo. Oil from the oil cooler is dripping onto the exhaust/catalyst and it burns. My mechanic told me that I should replace the whole assembly and not just the seals. From his experience he said that after replacing the seals, the oil pressure will rise inside the oil cooler, something that will force the oil cooler to fail within the next month after the replacement of the seals.
    So my question to those of you that have replaced only the seals, is this: Did you have oil cooler failure?
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  8. #36
    Handbrake Released
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    Quote Originally Posted by ontheroad View Post
    Hello from Europe. I have the exact same engine, on an Opel Astra 1.4 Turbo. Oil from the oil cooler is dripping onto the exhaust/catalyst and it burns. My mechanic told me that I should replace the whole assembly and not just the seals. From his experience he said that after replacing the seals, the oil pressure will rise inside the oil cooler, something that will force the oil cooler to fail within the next month after the replacement of the seals.
    So my question to those of you that have replaced only the seals, is this: Did you have oil cooler failure?
    It sounds like this mechanic is wanting a reason to charge you for more parts since there is a markup on parts. Replace the seals, preferably at a different repair facility. Could end up with a loose bolt so you come back in a month or two and him tell you, I told you so, to order a new assembly and charge you again.
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  9. #37
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    He claims that he has changed oil cooler seals in other models of this make, and they all failed. I have also seen in here in other threads, people that went to the dealers in order to repair the leak, and the dealer wanted to change the assembly. So, is the possibility of oil cooler failure possible?
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