Run it and see if the cooling system is being over pressurised, if so there should be evidence of water being ejected from the overflow/filler cap, look for signs of staining, if it isn't loosing any water it could possibly be the oil cooler.
i couldnt see any staining, started fine and seem to run ok. i couldnt seem to understand why if the oil cooler had gone, that it was allowing oil to the header???
i checked the dip stick and oil filler to see if there was "mayo" (creamey sludge) there but nothing. the oil wasnt new, as if someone had changed it to cover up, and was no mayo. thanks for your help
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