Freeze Protection, Checking And Adding Coolant Additive

Special tools and workshop equipment required

Refractometer T10007 A

Fig 1: Identifying Refractometer T10007 A
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

NOTE: Read the bright/ark boundary to obtain an accurate reading for the following tests. Place a drop of water on the glass to improve the readability of the bright/dark boundary. The bright/dark boundary can be clearly recognized on the "WATERLINE".

-- Check the coolant additive concentration using the Refractometer T10007 A. Refer to the Owner's Manual.

The refractometer scale -1- is designed for coolant additives G12; G12 Plus, G12 Plus and G11.

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

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The scale -2- is designed only for coolant additive G13.

-- Drain some of the coolant and add coolant additive according to the mixture ratio if the freeze protection is inadequate. Refer to COOLANT LEVEL, CHECKING AND FILLING .

NOTE:

The freeze protection must be ensured down to approximately -13° F (-25 °C).

If you cannot clearly determine which coolant additive is in the coolant system, use the scale -2- for coolant additive G13.

Follow all disposal regulations.

-- Check the freeze protection after the road test.