I plan to change the filter in my E320. It looks like my sealing washers (part 62 on the CD-ROM) are black rubber, but the dealers say they are copper. Can anyone explain? Also, the short fuel line after the filter has badly corroded connections and I ordered a replacement. How long do the other rubber fuel lines last?

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TomO
94 E320 Wagon, 170k, totalled in 2006
2002 BMW 525i Wagon, 75k
1991 BMW 318is (two of 'em)