I’m running 5/16” hose. I have a slight idle shake that I think my might be attributable to this. 5/16 is 7.9mm vs 7.0 that’s spec...

Not set on mb for the star, but rather because it’s right and seems tough to find quality rubber everywhere in odd sizes.

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)