was flushing out the radiator on me car the other week as there is a sludgy oily mess in the expansion tank, now i have flushed it about 4-5 time and even used the flush stuff from halfarts but the gunge is still there. I tried cleaning the expansion bottle but can only get it partially cleaned as it is divided into section.
i am assuming the gunge is in the other parts of the expansion bottle but how the hell do i clean it. When i flush out the system the water is clear.
cheers for any help
oh by the way it is not overheating