I'm really struggling with this Dave. My original drip came from the bottom join under the thermostat housing as in the picture earlier in this thread. But now it's dripping from the upper join - probably always did. I put it on stands yesterday and laid underneath with a torch until a drip occurred - after about five minutes........
That thermostat housing is mission impossible to get at. The upper Jubilee was loose, but wouldn't tighten so I had to replace it, after applying some grease in the join. It was a pig to get off, and the replacement took a long time to get started.
After running to full temp, it's dry, but I'm not hopeful yet. This is a temperature related problem. Clearly the temp differential from zero degrees cold to 90degrees hot is causing so much expansion that it's compromising the joint. It wasn't a problem last year when the temp rarely dipped to zero in the garage. I may live with it for now if I can't fix it, simply because to strip out the thermostat housing to make a proper job of it will take a lot of time and effort.
Tonight I'll know if this latest fix has worked, but I'm doubtful.
Frank - if your Jag has this engine - does it have a remote thermostat housing? and does it have a short stubby hose below? I'll check the Mondeo manual to see what the set up is because that hose will probably be Ford, and I'd like to get one in stock.
Note that the thermostat takes ages to open in this weather.
