Engine Coolant: Mixing
If a vehicle is found to have the incorrect coolant, drain and fill the coolant system using the procedures in ElsaPro.
-- G11, G12, and G12+ coolants have been replaced by an improved version.
-- G12++ coolant (for service available) has been introduced in MY 2005 for all engines.
-- G13 has been introduced in MY 2008 as initial fill and service coolant.
-- G12evo was introduced in MY19 as initial fill and service coolant.
-- Modern combustion engines make higher demands on the coolant. Audi is one of the few manufacturers whose coolant does not require changing. Therefore, the coolant has to be adjusted to the requirements and constantly developed further.
G12evo cannot be used in older vehicles for which it is not intended.
The model year 2019 and newer vehicles use - G12evo part number: 1.5L concentrate G -12E-100-M2 (to be mixed with distilled water). Only G12evo can be used in the Audi e-tron.
The model year 2018 and older vehicles use - G13 part number: 1-gallon concentrate G -013-A8-1G (to be mixed with distilled water).
Service
1) Based on its color, identify which coolant the vehicle was filled with from the factory.
2) Using the chart below, determine if the vehicle has the correct coolant. If a vehicle is found to have the incorrect coolant, drain and fill the coolant system using the procedures in ElsaPro.
How to use this table:
-- Check which coolant additive is in the cooling system.
-- Look for the coolant additive in the upper horizontal row.
-- Go down the green column. All coolant types of the green and yellow fields (described in the left vertical column) can be used. But preferably the coolant marked in a green field should be used.
Coolants can be mixed, as described in the chart, but it is always best practice to change the coolant due to reduced corrosion protection when coolants are mixed (exception: G12++ and G13 are fully compatible).
Only mix distilled water with coolant additives per ElsaPro.
Deionized water must not be used.
Drained coolant must not be reused.
-- When the coolant is changed due to a cooling system issue, the cooling system should be drained using the Service Information procedures in ElsaPro and refilled with water.
-- Then, run the engine for 15 minutes with the heater on to remove any residual coolant.
-- The final step is to drain and fill the system to the freeze protection ratio listed in ElsaPro.
If G11 is mixed with G12+, G12++, G13 or G12evo the coolant becomes brown (this is normal). The G12++ scale should be used when using the refractor T10007A to read the freeze protection for the G12evo coolant.
If it is unclear whether a cooling system is filled with G12, G13 or a mixture of the two, use the G13 scale of the refactors T10007A/B to read the freeze protection.
Cooling system drain and fill due to coolant mixing or incorrect coolant, is not covered by Warranty.
Refer to Technical Bulletin 2025303 for more information.
>>This is informational only and not applicable to any Audi Warranty.<<