My daughter recently bought a V6, with a slight leak in the bleed screw hose (NLA), tried removing the damaged bit and bridging with pipe and jubilee clips, held for 2 days, the “rubber” was disintegrating. Replaced with a spare. Only shortly after the 2nd large themostat to rad hose split. Replaced with a s/h one and working fine. The ones on the “new” car were soft and plastic like, the replacements of a similar age had a good feel to them. Why I'm not sure, one clue might be that the new car had been run with only the highest speed fan working, probably for quite some time.
Regards
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