Ok, the test results are in. A 10:1 mixture of distilled water and Zerex
Racing Super Coolant does a better job of cooling than a normal 50-50 mix of
anti-freeze and water. With the antifreeze / water mix, in outside temps of
85-90 degrees F, the temp gauge would hover around the 3/4 mark. If stopped
in traffic for say, 5 minutes or more, the gauge would head towards the H
mark (hot, hot, hot). With the water / RSC mixture, same outdoor temps,
normal driving - just shy of the 1/2 mark, idling in traffic - between 1/2
and 3/4 marks. Impressive.
Unfortunately, RSC does not provide protection below freezing, so it is
limited. But here in the almost desert climate of San Diego, no problem.
It may now be called Valvoline RSC, can't seem to find it under the Zerex
listing. And you have to buy a case of 6 quarts. At 1/2 quart per filling
and changing it every 2 years, that will last 24 years !! :-)
Good luck, Ken C
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