Good on you. Sorry man. Probably should lead with stuff like that, but I never think of it. Realistically, it probably doesn't matter which way they go since it will compress regardless. But I shared the way the manufacturer states to install it.
Are crush washers one time use only? Also, the end result of a crush washer is essentially a washer after it gets compressed, why not just use a regular washer? And I don't understand how metal to metal contact can provide a good seal??
Realistically, you CAN get multiple uses from a crush washer, but that is entirely dependent on consistent torque and a 100% clean mating surface (on both sides of the washer) but they're cheap, so replace them. The reason you get a good seal is the same reason an o-ring provides a good seal. You have a softer material sandwiched between two harder materials. (This is also why you should change them regularly.) The softer aluminum of the washer deforms and fills any irregularities of the harder materials (the bolt and the oil pan in our case.) if there is an irregularity and you've reused your washer, it may not seal 100%. It'll be relatively unnoticeable if you only do it once or twice, but eventually it will leak. It probably won't be a lot, but again, Why risk it? They're very inexpensive.
2:38 for those looking for which way it goes on.
Good on you. Sorry man. Probably should lead with stuff like that, but I never think of it. Realistically, it probably doesn't matter which way they go since it will compress regardless. But I shared the way the manufacturer states to install it.
Are crush washers one time use only? Also, the end result of a crush washer is essentially a washer after it gets compressed, why not just use a regular washer? And I don't understand how metal to metal contact can provide a good seal??
Realistically, you CAN get multiple uses from a crush washer, but that is entirely dependent on consistent torque and a 100% clean mating surface (on both sides of the washer) but they're cheap, so replace them.
The reason you get a good seal is the same reason an o-ring provides a good seal. You have a softer material sandwiched between two harder materials. (This is also why you should change them regularly.) The softer aluminum of the washer deforms and fills any irregularities of the harder materials (the bolt and the oil pan in our case.) if there is an irregularity and you've reused your washer, it may not seal 100%. It'll be relatively unnoticeable if you only do it once or twice, but eventually it will leak. It probably won't be a lot, but again, Why risk it? They're very inexpensive.
I guess I’m the market for a new mechanic.
I replace mine every time.