09-08-2016, 10:22 AM
...Or just brittle plastics. Seen most plastic parts of cooling systems explode on various cars over the years, so it's not necessarily indicative of an underlying issue - although clearly the cooling system over-pressuring due to a fault certainly won't help matters!
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate