Coolant testers
I'm looking for thoughts/opinions on coolant testing: specific gravity testers vs refractometers, recommended models, the RHA-200ATC in particular, yada, yada...
I have two turkey baster hydrometers, both for ethylene glycol, and they give readings about 20C apart. I'd kinda like to nail it down a little closer than that.
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'99 black 986
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