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The thing costs $0.80 ~ $1.00 but it gets crushed (due to the squeeze action at the right torque). Once crushed, it has lost its value/purpose to give a fluid tight seal. So do replace it.
Bye the way the only thing worse than not replacing one is to put a new one without discarding the old one (two washers).
The washers I use (supplied by dealer) are like metal rings, so I can't see how they can be crushed. I think they make now out of metal so they can be reused.
what? i dont have a washer on my oil plug...i guess before i started doing it myself someone must of taken it off
joshoowa, next time you change your oil, get a gasket from the dealership. everytime i went to get one from the dealer, they gave one to me for free and told me "don't worry about it." that's pretty cool of them.
The washers I use (supplied by dealer) are like metal rings, so I can't see how they can be crushed. I think they make now out of metal so they can be reused.
Aluminum or some alloy ... soft metal ... when you take it off look from the side and you can see it has been squeezed.