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100IH · 09-14-2018, 01:20 PM

Most of the rust is always in the block around the rear 2 cylinders. Have seen enough to fill a 2# coffee can when dry, stripped block, turned upside down with head off. That was after flushing. Use a segment if old speedo cable and long screw drivers to loosen up the solid mass. Any cure in a can good enough to clean out the block would destroy a radiator in minutes with rust chunks and could damage the block as well. In either case, when all is said and done a coolant filter in the upper hose should be used because flakes will circulate, looking for a new home. Catch them on the first lap around and before they get to the radiator.

09-14-2018, 01:20 PM	#3
100IH Senior Member Join Date: Dec 2011 Location: SW Idaho Posts: 970	Re: Thermocure and new water pump Most of the rust is always in the block around the rear 2 cylinders. Have seen enough to fill a 2# coffee can when dry, stripped block, turned upside down with head off. That was after flushing. Use a segment if old speedo cable and long screw drivers to loosen up the solid mass. Any cure in a can good enough to clean out the block would destroy a radiator in minutes with rust chunks and could damage the block as well. In either case, when all is said and done a coolant filter in the upper hose should be used because flakes will circulate, looking for a new home. Catch them on the first lap around and before they get to the radiator.