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Old 09-13-2010, 11:58 AM
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Rzeppa Rzeppa is offline
Cruise Moab Chairman & RS Secretary
Join Date: Aug 2005
Location: Kittredge CO, USA
Posts: 6,632

I did considerable research on this topic when I was offered some unused, but old ethylene glycol. It turns out that the "corrosion inhibitors" that they add to automotive coolant are simply buffers to react with any acid found inside the cooling system. Eventually they are used up and the coolant becomes acidic and will start to corrode the surfaces inside your cooling system. The "test strips" are simply litmus paper.
Jeff Zepp
Kittredge CO USA
1971 & 1976 FJ40s, 1978 FJ45, 1987 FJ60
Rising Sun 4WD Club, TLCA #4063
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