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Synchro909 · 03-16-2019, 06:23 PM

If a soluble oiil has been used in the cooling system, it is possible that the black crap in the filter is the insides of your hoses. Most of those oils attack the hose and soften them. As the hose disintegrates, pieces get into the coling system and clog things. It would look like RTV.

03-16-2019, 06:23 PM	#10
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,502	Re: Coolant Debris Looks Like RTV If a soluble oiil has been used in the cooling system, it is possible that the black crap in the filter is the insides of your hoses. Most of those oils attack the hose and soften them. As the hose disintegrates, pieces get into the coling system and clog things. It would look like RTV. __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.