[V6-12v] Oil drain plugs
tomchr at ee.washington.edu
Mon Aug 2 01:46:51 EDT 2004
At 05:50 PM 8/1/2004, apowell at colocougs.org wrote:
>About the oil drain plug...
> >The specified torque for the drain plug is 40 Nm (30 ft lb). It's
> >definitely beyond snug to me.
>What IS it about oil drain plugs that seems to compel people to tighten them
>so hard?? This is a lot more than should be necessary to tighten a copper
>washer. And it seems like anyone who changes oil tries to apply 100 lbs/ft
>to the drain plug when re-installing.
I can think of two options:
1) People are wimps who can't figure out how to use their bodies to apply
leverage on a wrench.
2) People don't want the plug to fall out and *WAY* over tighten it.
I just changed the oil on my car. It had a thoroughly used aluminum washer
in there. It was no trouble getting it out.
I replaced the Al washer with a copper one. It compresses fairly easy, and
I was a bit surprised when the torque wrench said enough... I thought it
would require more torque. I guess the copper is so soft that it doesn't
really feel like the plug is tight. Morale: Use that torque wrench.
>All this part has to do is prevent leaks - and it's not holding against any
>pressure, just a gallon of oil sitting there.
Hold the oil in. Don't fall out. That's the main objectives of the drain
plug. It's not rocket science.
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