Originally Posted by Mike Diaz

Matt, I have to disagree. I've done 8 C32A head gaskets to date. 7 of them were perfectly clean with coolant being sucked into the rear cylinders. There were no hints of any brown residue in any of the reservoirs. I make sure I check this before putting the car back together. 1 of the cars that had the brown residue in the overflow came back with a hole in the side of the block. When I tore the block down, you could see where the crank bearings had been scored so bad that it heated up the end of the rod and allowed it to break.

My buddy also performed a head gasket job at his shop, it had the brown residue in the overflow. 7-8 months later, that engine came back too with a hole in the side of the block. Same exact scenario.