For checking frost protection of coolant (G12++ / ethylene glycol based G13), windscreen washer fluid, electrolyte density in battery and concentration of urea for Ad Blue.
4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System,...
TRZ 4-in-1 Antifreeze Refractometer Ethylene Glycol, Propylene Glycol black
DEF Refractometer Measuring Diesel Exhaust Fluid Concentration of Diesel Engines
VW Air Cooled 1600 Engine Line Bore Gauge Tool VW Bug, VW Bus VW 1600 VW 1300
Antifreeze Refractometer 4-in-1 Coolant ℃
