I was wondering how many of you W123 diesel owners replace your brake master cylinder on a periodic basis for the sake of basic maintenance?

(even though you don't feel soft brakes etc.)

I don't find rebuild kits for the non turbo 300D and mine has about 170K miles over some 3 decades but brakes feel ok.

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1979 300D 220 K miles
1995 C280 109 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles SOLD
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1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD