I,m not familiar with the VW diesels. First glance you would think high
pressure ergo must be clamps?. But if they,ve gone 10 years without a leak
it,s obviously kosher.
I seem to recall there always being clamps on my air cooled stuff dating
from the 60,s. Wonder if it was a VW Aust measure for the hotter
climate????. Or just evidence of more overly cautious old sods.
John