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Old 01-30-2004, 09:33 AM   #1
Charlton
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Default oil pan crush washer question

Will it hurt to reuse the crush washer on the oil pan more than once? I was wanting to change my oil this weekend but I don't feel like going to Subaru to get the crush washer. Can I do it just one time?
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Old 01-30-2004, 10:59 AM   #2
North Ursalia
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Can you? Sure, nothing stopping you. Will it leak/weep? Possibly.


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Old 01-30-2004, 11:20 AM   #3
Psydotek
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Well, i suppose it could depend on how tight you "crush" it. I reused mine 3 times, only to have it start leaking after the 3rd time (that was because i didn't realize quite what the crush washer was for...)
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Old 01-30-2004, 12:53 PM   #4
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Cool trick:

Get our your oxy torch. Heat up your used crush washer until it's glowing red. Let it cool slowly.

You've now annealed your crush washer and its soft again. Of course, you've already crushed it thinner, so you couldn't do this forever....

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Old 01-30-2004, 02:22 PM   #5
North Ursalia
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It's like $1 . Why would you go to that much trouble for $1 ?


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Old 01-30-2004, 02:44 PM   #6
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Quote:
Originally posted by North Ursalia
It's like $1 . Why would you go to that much trouble for $1 ?
Well, I have ten of them sitting on the shelf, so I don't know!!!

However, I can imagine one scenario: Changing oil late at night. Rally next morning. All stores closed 7 hours ago.
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Old 01-31-2004, 02:14 AM   #7
Mikkito
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Quote:
Originally posted by North Ursalia
It's like $1 . Why would you go to that much trouble for $1 ?

Man, I didn't even have to pay for mine...
I can't imagine why anyone would rather toast it and reuse it than just get some when they're out and about...
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Old 01-31-2004, 01:44 PM   #8
rexaroo
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Get a Fumoto drain valve. $22.95 and you'll never need to change the crush washer again. Makes oil changes a lot less messier too. Fits all Subies so if you buy a new Sube, you can take it off and re-install it!
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Old 02-01-2004, 01:10 PM   #9
rick-l
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Quote:
Originally posted by North Ursalia
It's like $1 . Why would you go to that much trouble for $1 ?


Brian
What if the dealer is 20 miles away and you work during their buisiness hours? I haven't found the part at the FLAPS. Crushed three times so far no leakage.

What do Jifffy lube type stores do?
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Old 02-01-2004, 10:58 PM   #10
Kean
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Just remember that a crush washer is not only there to help prevent leaks between oil changes. It also helps prevent thread damage in the oil pan. Just buy a handful of them so you don't have to worry about it. Personally, I like to do the job right and see no reason to skimp on such an inexpensive item.
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Old 02-02-2004, 12:37 AM   #11
rick-l
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Anyone see why the solid copper crush washers that Bobby Bosch scatters through European fuel injection systems like confetti wouldn't work. Now what size are the inner and outer diameters of the washer. These you could get a handful of for a couple bucks.
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Old 02-02-2004, 07:12 PM   #12
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Anders - That trick works with copper crush washers. The OEM Subaru drain plug gasket is (I think) steel, and has a "D"-shaped cross section that physically smushes when it's tightened. So it can't be easily annealed, and even if it were, it wouldn't restore the gasket's sealing capability.

rick-I - I've used many different kinds of gaskets around Subaru drain plugs -- copper, rubber, plastic... The OEM one seems best but the others can work if they're all you have. The size you need is 20mm inner diameter. I've used some standard-sized drain plug gaskets before, too... can't remember if they were 3/4" or 13/16".

I wouldn't use a copper washer for the oil drain plug because they're meant to seal against two machined flat surfaces, and the Subaru oil pan isn't a flat machined surface. In a really tight pinch it would probably be better than nothing at all if you torqued it down hard, but still...
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Old 02-02-2004, 11:27 PM   #13
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I've reused crush washers repeatedly and never had a leak. Just check it regularly and make sure to replace it next time.
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