A1920042025303_1

19 Identifying and mixing factory fill engine coolants
19 20 04 2025303/11 June 25, 2020. Supersedes Technical Service Bulletin Group 19 number 19-98 dated
March 13, 2019 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All
1994 - 2021
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
11
-
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)
9
12/12/2018
Revised Technical Background (Updated information)
Revised Service (Added information on Audi e-tron)
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 G11, G12, and G12+ coolants have been replaced by an improved version.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:
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.
Page 1 of 4
© 2020 Audi of America, Inc.
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.
Production Solution
No production change required.
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 (greenblue), 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).
Page 2 of 4
© 2020 Audi of America, Inc.
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.
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.
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.
Page 3 of 4
© 2020 Audi of America, Inc.
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.
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.
©2020 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.
Page 4 of 4
© 2020 Audi of America, Inc.
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.