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So, it is starting to heat up here in the high desert, and so is my truck. It's a '91 V1500 Sub with the 5.7 and sadly a 2 core radiator. Also, not to mention 310k on the original drivetrain.

Anyhow, I was talking to a friend who suggested Red Line's WaterWetter, but the local Napa doesn't carry it. They gave me the Purple Ice instead. I put it in last night and went playing around in the hills this morning.

Granted, it isn't extremely hot out right now, but normally my truck runs between 170 and 210. When I'm out in the hills, it runs about 240. This morning it never got above 220! I was a little pessimistic about it in the beginning, but this stuff really does seem to work!
 

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Water Wetter is great stuff, I've been using it for a few years.
Some of the desert areas we play in here in Texas record 110deg temps through most of the summer months you have to use every trick available to keep vehicles cool and running when it's that hot out.
 
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