Replace Oil Pan?
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2004-2007 Cadillac CTS-V General Discussion Discussion, Replace Oil Pan? in Cadillac CTS-V Series Forum - 2004 - 2007; I went to a new shop that I had never been to before (with this car) and they discovered a ...
  1. #1
    ajedwardsjr's Avatar
    ajedwardsjr is offline Cadillac Owners Fanatic
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    Replace Oil Pan?

    I went to a new shop that I had never been to before (with this car) and they discovered a problem with my oil drain plug.

    The last shop that I had been using, for maybe about 50,000 miles or so, maybe about 10 or 12 oil changes, had apparently stripped the threads from the oil pan, and had done some kind of makeshift repair by coiling a spring about the drain plug, so that it would stay in. Really shoddy makeshift repair. This shop, the old shop, never mentioned this to me. Didn't mention that they had stripped the threads. Didn't mention that they had temporarily solved the problem that they had created.

    The new shop recommends that I get a new oil pan. Yikes! About $600 for the part, and another $1200 or so for labor. I understand why it's so labor intensive - they are going to have to both drop the exhaust and hoist the engine. Big job.

    But, do I really need a new oil pan? Seems like overkill. Is there not some way to weld in a new plug on the pan? To repair the pan, in other words?

    And, most important, who pays for this?

    Me?

    Or the old shop that stripped the pan in the first place?

    And how do I prove their negligence?

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  3. #2
    heavymetals's Avatar
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    Re: Replace Oil Pan?

    Any good shop should be able to install a heli-coil , which looks like a spring.

    You sure that wasn't removed?

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    ajedwardsjr's Avatar
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    Re: Replace Oil Pan?

    Entirely possible. Maybe the shop put that in and thought it was a good enough fix that they didn't need to tell me about it. They didn't charge me for it. Strange, though, they that didn't tell me. As in, "Hey, look, we inadvertently over-torqued your oil pan drain plug and stripped the threads. But, we have a really first class repair part, a heli-coil, which we'll install for free because it's our fault, and we'll guarantee it for as long as you own this car."

    Instead, they just put it in?

    I'll look into this.

    Thank you for your input.

  5. #4
    heavymetals's Avatar
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    Re: Replace Oil Pan?

    Heli-coils are very reliable and should not come out very easily.

    Maybe they stripped the threads and that is what you are looking at (removed threads).

    https://www.youtube.com/watch?v=HhM5AAT5NV4

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    ajedwardsjr's Avatar
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    Re: Replace Oil Pan?

    Miles Davis?

    Nice video, anyway.

    It does look like a heli-coil had been put in. But, maybe the same thing happened to my car as to the vehicle in the video.

    It looks like a repair is very doable, and that this whole idea of a new oil pan needs to get shit-canned.

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    Re: Replace Oil Pan?

    Perhaps too many oil changes? Seriously if your on syn wait for the 10K.

    But the heli-coil should be fine.

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    Re: Replace Oil Pan?

    What do you guess think about putting in an expansion plug?

    I really am not interested in buying a new oil plan. That just seems silly.

  9. #8
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    Re: Replace Oil Pan?

    There are several very good repairs that can be made to a damaged oil drain plug with the pan in place. You need to find a mechanic that can actually fix something. There are Heli-Coil inserts, Tap-Lock inserts, custom made bushing inserts as well as welded repairs that can be made. This is no big deal for a mechanic that can find his a$$ with both hands.
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    Re: Replace Oil Pan?

    Quote Originally Posted by ajedwardsjr View Post
    What do you guess think about putting in an expansion plug?

    I really am not interested in buying a new oil plan. That just seems silly.
    I think the video was made by a guy who had an expansion plug.

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    Re: Replace Oil Pan?

    The heli-coil is a trusted and proven way to fix this problem if it is installed right. Your old shop knew this but weren't sure if you would understand so instead of telling you and taking the chance that you would freak out and insist on a new pan, they just fixed it and went on.

  12. #11
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    Re: Replace Oil Pan?

    It is interesting that your new shop didn't know what it was, That would have me concerned.

    We install Heli-coils on any part that is aluminum where I work. Just makes the part last longer so if installed correctly, this is better than factory. If installed incorrectly (IE, not tapped properly) then you could potentially scrap the part. Hope you can save her, $1,800 to fix this is nuts.
    lollygagger8 likes this.

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    Re: Replace Oil Pan?

    Agree w/rob. Speaks from experience. There are also "save-a-plug" solutions that are just a bit larger in diameter with self cutting threads that work well if installed properly, but Helicoils, thread certs, tap a thread, etc. are all industry standards and done correctly excellent permanent fixes.
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    Re: Replace Oil Pan?

    I need to check out these "save-a-plug" out, they sound cool.

    I have used Keenserts in the past however a tap and insertion tool is required, it is not a self tapper.


    The only issue I see with these is where the o-ring would land for the plug. You would need to get one with a big enough OD so it would land on the Keensert and then seal the Keensert so it would not leak oil. the other potential problem would be do you have enough aluminum for this plug.

    There is risk involved with any of these solutions and I hope you find something that works. Please post the results with pictures.

  15. #14
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    Re: Replace Oil Pan?

    Very concerned. Concerned that they did't know what a heli-coil was. Concerned that they didn't suggest one of the many save-a-plug solutions on the market. Concerned that they really wanted me to spend $1800-$2000 on a new oil pan.
    RippyPartsDept likes this.

  16. #15
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    Re: Replace Oil Pan?

    Is the plug leaking at all? If not, then the fix the first shop did is apparently fine.

    As others have said, it's pretty frickin' strange that the new shop doesn't know what a heli-coil looks like. Can't help but wonder if they were playing dumb in the hopes of getting you to agree to a more expensive repair.
    RippyPartsDept likes this.
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