[Graeme / New Zealand]

Personally I would follow the steps as suggested. I've used it in my engine and left it circulating for a while it was not a good idea as the water went "gluggy". Even after I drained and replaced with fresh water remnants of it were still circulating for a while. I eventually caught it by putting some mesh strainers over the inlets to the radiator and cleaning them out regularly. I used it previously on a little E13 Nissan that got a small head gasket leak. This car wasn't worth a "tin of shit" but was a great run around. It was a cheap fix and it was still working 4 years later when my daughter smashed the car up. As i said good stuff if you follow the directions. By the way I put it in my v8 to repair a crack in the head water jacket... it didnt work (thats why I let it circulate too long, hoping it would). Did the right thing and got a replacement head in the end.

GB