A192228202530313

Technical Service Bulletin
19 Identifying and mixing factory fill engine coolants for review
19 22 28 2025303/13 January 28, 2022. Supersedes Technical Service Bulletin Group 19 number 22-27
dated January 10, 2022 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All
1994 – 2022
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
13
-
Revised Technical Background (Updated information)
12
01/10/2022
Revised header (Added Models and Model Year)
11
06/25/2020
Revised Technical Background (Updated information)
Revised Service (Updated Figure 2)
Discontinuation and mixing of Audi-approved engine coolants.
Technical Background
• G11, G12, and G12+ coolants have been replaced by an improved version.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.
Tip: All model years can use - G12evo part number: Ready to use G -12E-050-1G-DSP except MY2015 A3
2.0TDI with engine code CRUA, which must still use G13. Only G12evo can be used in the Audi e-tron.
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of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a
retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without
the prior expressed written permission of the publisher.
Technical Service Bulletin
Production Solution
Not applicable.
Service
Identifying and mixing factory fill engine coolants:
1. Based on its color, identify which
coolant the vehicle was filled with from
the factory (Figure 1).
Tip: Figure 1 is shown for color
identification only; coolant packaging
may vary.
Figure 1. The color of each type of engine coolant. G11 (green-blue),
G12 (red), G12+, G12++, G12evo, and G13 (purple).
2. Using the chart below, determine if the vehicle has the correct coolant (Figure 2). If a vehicle is found to have
the incorrect coolant, drain and fill the coolant system using the procedures in ElsaPro.
© 2022 Audi of America, Inc.
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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights
of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a
retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without
the prior expressed written permission of the publisher.
Technical Service Bulletin
Figure 2. The table identifies which Service coolants (left) can be added to the Factory Filled coolant (top).
Color
Ratio description
Green = Can be mixed in any ratio.
Yellow = Mixing is possible but it will cause a reduction in corrosion protection.
Red =
Cannot be mixed.
How to use this table:
1. Check which coolant additive is in the cooling system.
2. Look for the coolant additive in the upper horizontal row.
3. 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.
Note:
When the coolant is changed due to a cooling system issue, the cooling system should be drained using the
Repair Manual procedures in ElsaPro and refilled with water.
© 2022 Audi of America, Inc.
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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights
of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a
retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without
the prior expressed written permission of the publisher.
Technical Service Bulletin
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.
Tip: 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 T10007B 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.
Warranty
This TSB is informational only and not applicable to any Audi Warranty.
Required Parts and Tools
Additional Information
All part and service references provided in this Technical Bulletin (2025303) are subject to change and/or removal.
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check
the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©2022 Audi of America, Inc. All rights reserved. The information contained in this document is based on the latest
information available at the time of printing and is subject to the copyright and other intellectual property rights of
Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make
changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
© 2022 Audi of America, Inc.
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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights
of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a
retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without
the prior expressed written permission of the publisher.