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Originally Posted by dieseldiehard
Following a chemical flush, I empty then refill the radiator, run the car until the thermostat opens (heater on) by driving it 2 miles or so, then I repeat the process as many as five (5) times, until the discharge water no longer feels slippery.
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This is a law of diminishing returns. The first time you flush it, say you remove 80% of the flush solution. The remaining flush solution is down to 20%.
The second time removes 80% of the remaining 20% = 16%
The third time removes 80% of the remaining 16% = 13%
The fourth time removes 80% of the remaining 13% = 10%
The fifth time removes 80% of the remaining 10% = 8%
It would sure be nice to figure out where the remaining 20% is hiding. Dave does not believe that it is in the bottom of the block because removing the drain plug results in very little discharge.
So, where is it?