Re: I keep reading about flusing the coolant every 2 yrs... - Saab 9000 Bulletin Board - Saabnet.com
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Re: I keep reading about flusing the coolant every 2 yrs...
Posted by Stephen Goldberger (more from Stephen Goldberger) on Fri, 23 Aug 2002 22:13:43
In Reply to: Re: I keep reading about flusing the coolant every 2 yrs..., Quasi, Fri, 23 Aug 2002 17:09:04
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I would rather simply drain-and-fill every year. After the 2nd "drain and fill" just 1% of the original coolant remains, and the average age of coolant in the system never exceeds about 13 months. Thorough flushing as described creates gallons and gallons of hazardous waste, much of it running into the ground or into the drains, versus 2 gallons per year for a simple drain-fill, most of which is captured for recycling. The only time a flushing is called for is when a cooling system is neglected for a number of years and a chemical flush to remove products of corrosion is required. Especially with the 9000, removing all those pesky fasteners to drop the plastic underbody shield goes easier if done more frequently, and don't forget to treat the fasteners with some kind of rust retardant. I use a waxy spray undercoating.
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