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2 step process
Posted by KeithR (more from KeithR) on Wed, 26 Sep 2001 23:46:53
In Reply to: What is right method to flush cooling system?, aeroblues, Wed, 26 Sep 2001 16:09:57
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Backflushing involves 2 steps. The first is to introduce a chemical that attacks the scale, deposits, and rust in the system, lossening them. This chemical must also NOT attack the aluminum, seals, or water pump bearing. YEAH...RIGHT.. The second step is to flow fluid in the opposite direction of normal flow to break off the crud. This changes from year to year, model to model. When stuff builds in the cooling system it forms like scales on a fish. When you backflush you break them off. then you have to get the pieces out with fresh fluid. None of this will work on a total clog, then you need to use pressure or have the item "boiled out" in a chemical bath that will react with the blockage.
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