The part is quite inexpensive, maybe $25 at the very most. I'd do it, also you'll be able to install new o-rings while it's out. Not to metion like others have said, it can clog.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

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