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Review on ๐Ÿ“Š DEF Refractometer: Accurate Measurement of Diesel Exhaust Fluid Concentration in Diesel Engines by Troy Zelazny

Revainrating 5 out of 5

Works well and accurately

I like this one more than the 4-in-1 which has multiple gauges for different liquids, the window gauge is for DEF only and larger to make it easier to read. Tested with distilled water and factory calibrated before first use. I was hesitant to buy it at first as it has a bad rating from Fakespot reviewers but it turned out to be a good buy.

Pros
  • Easy setup
Cons
  • There are other interesting options.