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« on: 27 January 2011, 18:48:06 »
I too have a coolant leak. I first noticed steam coming from under the passenger side rear of the bonnet. My first thoughts were the HBV so I took scuttle off and had a good poke around. The HBV is not the culprit. It seems to be coming from somewhere under the plenum at the back. Looks like I too will be ripping the engine apart to try and find the source of the leak... I think that its something to do with the oil cooler plate or leak from the oil cooler pipes. Typical signs of failure start with the coolant turning brown, and exhibiting slightly oil tinge to it. Mine has rusty coloured coolant sort of dark brown. Not seen any obvious oil tinge as such. Complete failure of oil cooler results in clogged radiator, and a sludge forming in the header tank. But I have not got that. Going to have to strip it down and pressure test it. It definitely does it the worst when hot and at high revvs. It seems to be pouring out empting the coolant tank after a few miles when driven normally. Drive slowly and it only uses a little bit. Some one said use a decent radiator leak fix... Comments please...