Technical Service Bulletin
19 Identifying and mixing factory fill engine coolants
19 14 50 2025303/4 June 20, 2014. Supersedes Technical Service Bulletin Group 19 number 13-41 dated June
20, 2013 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

All

1994 - 2015

All

Not Applicable

Condition
REVISION HISTORY
Revision

Date

Purpose

4

-

Revised header data (Added model year)

3

6/20/2013

Revised Service (Removed note about W12 engines)

2

3/25/2013

Revised Technical Background (Added information about G13)

1

2/10/2011

Initial publication

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• G11, G12, and G12+ coolants have been replaced by an improved version.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 factory filling and service.

Production Solution
No production change required.

© 2014 Audi of America, Inc.

Page 1 of 3

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
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++ and G13 (purple).
2. Using the chart at right, 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 repair manual
procedures in Elsa.

Figure 2. The table identifies which Service coolants (left)
can be added to the Factory Filled coolant (top).
Note:
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 use distilled water for mixing coolant.
Note:
When the coolant is changed due to a cooling system issue, the cooling system should be drained using the
repair manual procedures in Elsa and refilled with water and the engine run for 15 minutes with the heater on to
remove any residual coolant. Then drain and fill the system to the freeze protection ratio listed in Elsa.
© 2014 Audi of America, Inc.

Page 2 of 3

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
Tip: 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
No special tools required.

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 Repair Manuals for the latest information.

© 2014 Audi of America, Inc.

Page 3 of 3

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.