Just some info about the aluminum crush washer

[PerryRT]

From the Fumoto website it appears that the nipple is a barbed hose connection suitable for hooking up a hose to to drain oil through. The adapter is apparently designed for oil pans with recessed plugs, so that the valve body doesn't hit the pan during the installation process.

Why don't you take a look at the website - there appears to be a fit guide here that should get you going.

Me, I've seen similar devices used on other types of engines, but I've not used one on my car(s), so I can't advise. They seem to have a following around here, though!

[pt850]

re: aluminum vs. copper washers for oil drain bolts.
Someone commented that copper is harder than aluminum.
In my experience, if you anneal a copper washer, it is softer than aluminum. A copper washer can be used indefinitely, if you anneal it before replacing it on your car.
To anneal a copper washer: Get a cup of water. Grip washer in needle-nosed pliers. Apply heat from a propane torch until the washer is "cherry" red -- glowing brightly. Drop into the water. Voila. The washer in now soft.