Senior Member
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Join Date: Jul 2012
Location: Odessa/Midland TX
Posts: 3,711
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Senior Member
Join Date: Jul 2012
Location: Odessa/Midland TX
Posts: 3,711
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I've flushed just like what others said, thermostat out, and garden water. I live in a salty basin and water is very much loaded with lots of soluble impurities. I am not heating the water (no engine run) so the metals will not precipitate as salts.
Run water from top to bottom and bottom to top. repeat several rounds and then flush with 3-4 gallons of distilled water. It's been about 5 years and the red coolant is still as transparent as the day I did the flush.
Yes, cooant MUST only be diluted with distilled water (rain water is also good). I have access to deionized water but that is too good for a cooling system.
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1990 3L Diesel Hilux LN 106; 1973 Ford Cortina XL
1992 4AFE Toyota Sprinter AE 91 (aka Geo Prizm)
1997 5vzfe 4Runner 4x4 (aka Hilux Surf)
2000 2uzfe 100 Series Land Cruiser
2021 Tacoma TRD Off-Road 4x4 6-speed
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