Re: Redish-Brown Sludge In Coolant System + White-Blue Crystals!
Yeah, pot metal housing, I'd pull the lower hose, maybe pull the water pump, if it looked clear (as in not blocked) then I'd flush and forget all about it. If I found that crap in the water pump or anywhere else, I'd be concerned. How solid is it? Does it crumble to the touch, look like it could break off and be floating around clogging heater core?
1967 El Camino Malibu - Deepwater Blue
ZZ4 350, FiTech 600 complete!,Roadmaster tank, 700R4, Underdash A/C in progress, JGC Steering, 1990s truck serpentine.