A192227202530312

Technical Service Bulletin
19 Identifying and mixing factory fill engine coolants
19 22 27 2025303/12 January 10, 2022. Supersedes Technical Service Bulletin Group 19 number 20-04
dated June 25, 2020 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All
1994 – 2022
All
All
Condition
REVISION HISTORY
Revision
Date
Purpose
12
-
Revised header (Added Models and Model Year)
11
06/25/2020
Revised Technical Background (Updated information)
Revised Service (Updated Figure 2 and part numbers)
10
03/13/2019
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• G11, G12, and G12+ coolants have been replaced by an improved version.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:
© 2022 Audi of America, Inc.
Page 1 of 5
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
The model year 2019 and newer vehicles use - G12evo part number: Ready to use G -12E-050-1G-DSP. Only
G12evo can be used in the Audi e-tron.
The model year 2018 and older vehicles use - G13 part number: Ready to use G -A13-774-1G-DSP.
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.
© 2022 Audi of America, Inc.
Page 2 of 5
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 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.
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 b
Note:
© 2022 Audi of America, Inc.
Page 3 of 5
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
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.
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.
Coolants can be mixed, as described in the chart, but it is always best practice to change the coolant due to reduced corr
compatible).
Only mix distilled water with coolant additives per ElsaPro.
Deionized water must not be used.
Drained coolant must not be reused.
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
© 2022 Audi of America, Inc.
Page 4 of 5
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
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.
Page 5 of 5
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.