Our 86 Syncro Westfalia was purchased in its 10th year, so here are the cooling
system failures since then:

Plastic manifold cracked (replaced)     10 years         ca. 90,000 kms.

Low level sensor cracked                   10 1/2 years    ca. 97,000 kms.
(replaced)

Heater hose from manifold                 10 1/2 years    ca. 97,000 kms.
(damaged by doof who replaced
the manifold - hose replaced)

Right Head drip (stopped by some       11 years          ca. 105,000 kms.
magic leak stop stuff - ceramic I think)

replaced pipe to left of engine              11 years          ca. 105000 kms.
before it failed

Larry Johnson