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I have been doing a very serious coolant flush now for two weeks. I get more stuff out with every flush. Lots of rusty iron chunks. I have both block plugs open and I'm backflushing the oil cooler and the heater core. I keep thinking that eventually I'll stop getting trashed but it just keeps coming. My question to the experts out there is where is the stuff hiding? Radiator? Heater core? Block? Or all of the above? Thanks for any advice as it may help in getting the crap out.
I did. Restore, then restoreplus, then i drove it for 2 days with a pint of dawn in it. Each time breaking plenty of stuff loose, with perhaps the dawn dish detergent getting the most stuff out.
I'd take the hoses off the heater core and radiator and flush it with the garden hose. Then i'd take the thermostat out and make a rubber fitting to connect the garden hose to the thermostat housing and pull the block plugs and just run the hose til it clears,then do a chemical flush again and repeat the garden hose flush til clear and then do the distilled water flush. Also I'd use the IPR coolant filter due to the fact that this engine has issues with rust.