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Old 10-12-2009, 02:46 PM   #1
Knight_Fall
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Default Oil drain plug leaking

Hi all, (noob question) A friend recently gave me a Titek magnetic drain plug, which I changed out when I did an oil change 2 weeks ago. Now my Sti leaks oils, is it possible that I either put the oil plug gasket on facing the wrong way, or perhaps the Titek MDP is not good? I'll probably watch the oil for now, and put the stock plug back on. Just wanted to know why it was leaking. Thanks, KT
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Old 10-12-2009, 02:47 PM   #2
Jons_uurx
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Quote:
Originally Posted by Knight_Fall View Post
Hi all, (noob question) A friend recently gave me a Titek magnetic drain plug, which I changed out when I did an oil change 2 weeks ago. Now my Sti leaks oils, is it possible that I either put the oil plug gasket on facing the wrong way, or perhaps the Titek MDP is not good? I'll probably watch the oil for now, and put the stock plug back on. Just wanted to know why it was leaking. Thanks, KT
did you use the same crush washer?
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Old 10-12-2009, 02:50 PM   #3
xTourniquet
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Make sure it's tight and use a new crush washer every time.
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Old 10-12-2009, 02:53 PM   #4
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Originally Posted by xTourniquet View Post
Make sure it's tight and use a new crush washer every time.
every other time . . . .
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Old 10-12-2009, 03:01 PM   #5
lotarg
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I read that magnetic drain plugs are pointless for the engine oil.
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Old 10-12-2009, 03:09 PM   #6
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Flat side of crush-washer to the plug, rounded side to the pan.

I put a new one on every time, though there are people who say otherwise. Then again I change my gear oil every year, my oil at 3000 max (AMSoil 20-50), and I go over suspension components every month at the longest.

You will get all types of responses from all types of people who use their vehicles in all types of ways. I am a performance oriented fail-safe type. My car runs great, and I definitely push it to it's limits regularly.
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Old 10-12-2009, 03:12 PM   #7
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I too put a new crush washer everytime...better safe than sorry and the thing is so cheap.

Then again I haven't changed crush washers in a year and a half because I have a Fumoto valve.
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Old 10-12-2009, 03:34 PM   #8
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Originally Posted by bpang1 View Post
Then again I haven't changed crush washers in a year and a half because I have a Fumoto valve.
.. do this $20 dollar investment next time and be done with headaches. But for now give the bolt an extra turn or two.
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Old 10-12-2009, 06:02 PM   #9
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Originally Posted by Scooby-King View Post
every other time . . . .
?

I never looked into Subaru's specs but in general crush washers work until they are crushed (aka once). I work on some very high end machinery and you never, ever, ever reuse a crush washer. Once it conforms to the surface imperfection once its done for. Esp when they are 10 cents each....

Does Subaru recommend reusing them?
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Old 10-12-2009, 11:00 PM   #10
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nooooo they dont
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Old 10-13-2009, 12:33 AM   #11
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If you over-torque a crush washer, it's going to leak. I used the same crush washer for three changes at sliiiightly higher torque specs each successive change, and I had no leak problems. But I now change them every other change.
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Old 10-13-2009, 03:24 PM   #12
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Thanks for all the help.

Yes, I changed the crush washer with one I got from the dealership. I might have put the crush washer on facing the wrong way. I will know when I change the oil in a bit.

Hmmm.. Over torque-ing the bolt can make it leak?

I did give it another 3/4 turn and still leaks. Seemed pretty snug and also I do not want to over torque it too much.

Now, I am just worried I may have cross threaded the oil pan.

As I mentioned I will most likely just go back to the OEM drain plug, hope it doesn't leak then.
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Old 10-13-2009, 04:07 PM   #13
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I think you would know if you cross threaded it, it would NOT go in easily...
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Old 10-13-2009, 04:17 PM   #14
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i always have that problem
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Old 10-13-2009, 04:19 PM   #15
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Torque spec is 44 Nm IIRC.
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Old 10-13-2009, 04:24 PM   #16
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The crush washer can go either way.
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Old 10-13-2009, 04:31 PM   #17
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Quote:
Originally Posted by 2.5ReallySexy View Post
The crush washer can go either way.
Flat side to flat surface, crush side to irregular service is the "right" way. Only one side will "crush" to fit irregular surfaces, why would you want that side against the bolt head ? Though yes, you can do many things a number of ways.
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Old 10-14-2009, 09:48 PM   #18
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I think I got about 8 changes out of one crush washer before it began to leak... maybe it was a fluke, but as long as you don't torque the hell out of the thing and make sure to clean it, the plug and the surface of the pan you should easily be able to get away with every other change if not more.


And yes, they are cheap, but it's not always convenient where I live to make a trip to the dealer to get more (I finally just bought a ****load of them to keep in the toolbox).

Next up... buying a supply of push clips and replacement bolts for the undertray.
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Old 10-14-2009, 11:00 PM   #19
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wait so.... which way does the crush washer go? someone said flat to bolt and someone said other wise
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Old 10-15-2009, 07:20 AM   #20
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I know when I worked at Toyota we had people come in with aftermarket drain plugs that were just a haaaaaiir smaller than the original and they would leak, or break in half when you take them out, or would just strip to a perfect circle the first time you change your oil. Does that happen with subarus? Not sure. Just thought I would mention that.

And yea, change the washer everytime for me.
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Old 10-15-2009, 01:19 PM   #21
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Quote:
Originally Posted by p01ntb1ank View Post
wait so.... which way does the crush washer go? someone said flat to bolt and someone said other wise
I think thus far I am the only person to reference the orientation of the crush washer. The rounded "crush" side is meant to form itself to slight irregularities on the pan, while the flat side is meant to seat against the bolt head. No-one in this thread said otherwise, except for one person that said it doesn't matter which way you do it. Of course I believe they simply do not have enough experience to know what they are talking about.
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Old 10-15-2009, 03:41 PM   #22
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try using teflon tape...it worked for my oldsmobile back in the day lol.
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Old 10-15-2009, 03:58 PM   #23
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try using teflon tape...it worked for my oldsmobile back in the day lol.

oh man
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