Usually i throw away and use a metal one. My boy’s car had been leaking from drain bolt. i asked if he replaced the washer when he changed oil. He didn’t so i told him to replace it. He ended up buying a whole mew drain bolt with a plastic washer and used that. Didnt have a metal one on hand. Are these actually able to be used or should he get a metal one, its still leaking which is why i ask. Unless he’s not tightening enough which i doubt is the issue. Thanks people
Far more likely to be an old washer stuck on the pan that looks like it’s part of it.
Nylon doesn’t leak. I use OEM toyota washers on corollas and they’re essentially cardboard with rubber and they’ve never leaked in all my years
If its designed to be a crush washer, it’ll do. Its hard to F up.
Theres reusable rubber gaskets, fomoto valves, copper washers, nylon washers, more traditional metal washers.
All of em work and leaks are usually on the installer and not the material.
Cleaning is important, even if its just a brush with a paper towel, 1 washer is important, and torque specs are important if you’re unsure.