Re: Flushing a engine block that has been sitting.
I've always used the following process and am happy with the results. I drain everything I can from the bottom of the radiator, then add water and either one of the commercial flush products or muriatic acid (pool supply center). Then I run it for 20min or so. (you might have to do it longer if you suspect a large deposit of iron oxide is in there) Then drain it again.
Then I disconnect the upper hose from the radiator and add a few other hose pieces until the upper hose (and extensions) lay out over the front of the car. I put the garden hose in the top of the radiator and let the engine run until the thermostat opens and everything in the block runs out over the front of the car. Keep filling the radiator when that happens and wait for the next heat cycle when the thermostat opens and the bad stuff flushes out. I keep repeating that process until I see clear water coming out. Once that is done, drain it again then I reconnect the upper radiator hose and refill with water and antifreeze and I'm done. oh, and I add water wetter too.
Works for me
Verne [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]
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