Freeze Protection, Checking: Notes

Special Tools And Workshop Equipment Required 

• Refractometer T10007 A
  Fig 1: Identifying Refractometer T10007 A

  Courtesy of AUDI OF AMERICA, LLC

Perform the following:

-- Use the pipette to put a drop of windshield washer fluid on the refractometer glass, then close the cover glass.

A light-dark line is clearly visible on the "WATERLINE" scale.

-- Determine the freeze protection of the windshield washer fluid with the help of the scale -4- and the Refractometer T10007 A. To do this, read the value on the light-dark line.

Fig 2: Identifying Scales On Refractometer: Coolant Additive G12 Plus And Coolant Additive G13

Courtesy of AUDI OF AMERICA, LLC

-- If necessary, adapt the freeze protection value by changing the mixture ratio: