I’ve looked for these o-rings on my filter canister stem but have never figured out what everyone is talking about. There are what appear to be metallic washers down close to the tip of the stem. Are these not metallic on a 1983 240D? I see psfred’s post that they could be rock hard if they haven’t been changed. I can’t imagine rubber o-rings being as hard as what is on my car. If they’re not soft rubber, how do they go on? I have no oil pressure problem but would like new o-rings if they are needed. If they don’t come with the filter, where are people getting them? I saw one old post about the hardware store, but I’d like ones rated for that temp.

JohnM 1983 240D