Oil Leak from Drain Plug

[Lippy]

Fighting oil leaks on my E30 like everyone else, but one area that is leaking that really shouldn't is the drain plug. I already bought a new OE drain plug and installed a new OE washer. Its still leaking. What would you guys do next?

[varg]

New threads. It's aluminum, not hard to helicoil. Just pour the used oil back through it to flush the chips out afterward.

[82eye]

New threads. It's aluminum, not hard to helicoil. Just pour the used oil back through it to flush the chips out afterward.

re-tap or chase it first. it's possible to clean a cross thread on aluminum and still get a seal.