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Graham1961 · 25th July 2018, 22:33

Redmaestro posted up looking for advice regards a coolant leak from his thermostat housing on a V6, he has been given expert advice from the Traders who have vast experience on repairing these cars on a regular basis, not just one car but hundreds, this includes a man who is an expert in thermoplastics.

I would be inclined to take heed of this advice.

Earlier in the year i read an article in Car Mechanics, one of the contributors Andrew Everett bought an 2004 E46 3 series from the auction and it had a coolant leak, he said the plastic coolant pipes fell to pieces when carefully removing them, he remarked it was due to the heat/cooling cycles they have gone through over the cars life and remarked how even a slight weepage from these plastic coolant pipes almost certainly results in new replacements having to be sourced, over the years plastic does degrade and a fracture of a plastic coolant pipe can be catastrophic to any engine.

The OP has been offered two conflicting views regards his coolant leak, hopefully after reading all the posts he will make the right decision.

25th July 2018, 22:33	#132
Graham1961 Moderator / RS East Scotland Rover 75 1.8 Conn Se saloon Join Date: Nov 2007 Location: North Berwick, East Lothian Posts: 4,738 Thanks: 4,143 Thanked 753 Times in 563 Posts	Redmaestro posted up looking for advice regards a coolant leak from his thermostat housing on a V6, he has been given expert advice from the Traders who have vast experience on repairing these cars on a regular basis, not just one car but hundreds, this includes a man who is an expert in thermoplastics. I would be inclined to take heed of this advice. Earlier in the year i read an article in Car Mechanics, one of the contributors Andrew Everett bought an 2004 E46 3 series from the auction and it had a coolant leak, he said the plastic coolant pipes fell to pieces when carefully removing them, he remarked it was due to the heat/cooling cycles they have gone through over the cars life and remarked how even a slight weepage from these plastic coolant pipes almost certainly results in new replacements having to be sourced, over the years plastic does degrade and a fracture of a plastic coolant pipe can be catastrophic to any engine. The OP has been offered two conflicting views regards his coolant leak, hopefully after reading all the posts he will make the right decision. __________________ Graham.