Originally Posted by ls1 down under
I noticed in my coolant there are lots of tiny black coloured plastic bits floating in it. They appear to look like flaked off paint? When I pick one up it feels like lightweight, thin, shiny plastic paper. I have mls head gaskets and a new water pump was fitted only weeks ago.
Anyone else had this before? What is it?
those are most likely pieces of old radiator hoses. They dry rot and start losing pieces of themselves in your cooling system. Check your hoses, my bike had a dry rotted hose that lost pieces just like you described. Flush your radiator, if that doesn't work do a full system flush. The flush of my system solved the problem.
1999 TA WS6 A4: Dynatech SuperMAXX LT's, Catted Y, Borla exhaust, Lowered.
2006 GTO M6 SLP LM1 Cat-back. Sold Dec 18th 2014
2000 Camaro SS; A4, Edelbrock Shortys, Catco Cats, Stock Y-pipe, SLP LM1, OEwheels ZR1 Deep dish 17x11 315's in rear, 275's in front. (RIP April 25th, 2013)
2001 Yamaha R1; Yoshi slip on (sold 1/12/12)
1999 Trans Am WS6; M6, SLP LM1, Skip shift delete. Sold 5/14/09
1999 Camaro Coupe; Auto, Mystic Teal, so slow I gave it back to Carmax and got the SS.