Freeze Protection, Checking And Adding Coolant Additive If Necessary

Special tools and workshop equipment required

Refractometer:T10007 A

Fig 1: Refractometer : T10007 A
Courtesy of AUDI OF AMERICA, LLC

NOTE:

Read the cut-off line to obtain an accurate value for the following tests. Place a drop of water on the glass using a pipette to improve the readability of the cut-off line. The cut-off line can be clearly recognized on the "WATERLINE".

-- Check the coolant additive concentration using the Analog Refractometer:T10007 B (observe the operating instructions).

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

Fig 2: Identifying Scales On Refractometer: Coolant Additive G12 Plus -1- And Coolant Additive G13 -2-

Courtesy of AUDI OF AMERICA, LLC

The scale -2- only applies to coolant additive G13.

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

NOTE:

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

Follow all waste disposal regulations!

-- Check the concentration of the coolant additive again after the road test.