Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
Is it possible to replace a copper washer for sealing, e.g. On the coolant drain bolt with a stainless steel washer? Is the stainless steel soft enough?
Stainless starts to "eat" other materials, I wouldn't use stainless, and I think it's too hard. Use copper.
Yeah it's copper for a reason.
Use a copper washer bud.