I have a Perking M30 in a Lagoon 37
TPI and there appears to a black oily residu in the cooling water
. My first thought is to drain the system, flush it out, fill it back up with water
and antifreese, and then see if the oily substance returns.
Does anybody have any idea what might be causing this? The engine
starts easily and runs smoothly, so I doubt it is a cracked head
. Also, the engine oil
remains black (rather than brown), so I doubt that water is getting into the engine oil
. I recently purchased the boat, so I have no history
, and the surveyor
didn't note a problem.
Also, is there a good product to help flush out the cooling
All help greatly appreciated.