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B230FT Coolant Question 900 1994

At the recommendation of others on the BrickBoard, I'm changing over to Zerex GL-05 formula coolant/anti-freeze in my 945 turbo brick.

Upon removing and cleaning the expansion tank, I found some "sand" type material, somewhat dark in color at the bottom of the coolant reservoir tank . Is this metal from the water jackets or a substance in the previous Prestone conventional green coolant?

There was quite a bit of this sand in the tank, so a complete flushing of the system is in order obviously.

Anyone venture a reason for the sand material and what it is in my otherwise spotless cooling system?

John






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New B230FT Coolant Question [900][1994]
posted by  Townshend Act  on Wed Nov 19 00:36 CST 2014 >

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