E-Z Red S102 Anti-Freeze Hydrometer

I measured engine coolant and intake coolant. Seems to be accurate because my mechanic measured same values. -40C and -25C

I bought it because it was cheap, but when I used it the gauge told me that my antifreeze was good to -20 F. I took it at face value without thinking about testing it at all. I flushed my coolant on my bike and replaced with Engine Ice anti-freeze...

Very clear viewing, and like its name, it's easy to read. Usually can suck up enough coolant to make the reading in one squeeze- very handy. A 100x better than my old cheap floating colored balls one that could barely hold enough coolant to get a...

I bought this to show my son how to measure the effectiveness of antifreeze instead of just replacing it on a schedule. It works as advertised. It takes me back 20-30 years ago when these were commonly used.

I've done auto repair most of my life. And, I've used a wide variety of anti-freeze hydrometers to check the level of protection. In almost every case, I've typically used the Auto Parts Store units, or good old Wal-Mart... In every case, almost...