Cooling System - Coolant ID/Filling/Mixing Information
19 Identifying and Mixing Factory Fill Engine Coolants19 13 35
2025303/2
March 25, 2013
Supersedes Technical Service Bulletin Group 19 number 11-19 dated February 10, 2011 for reasons listed below.
Vehicle Information
Condition
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^ G11, G12, and G12+ coolants have been replaced by an improved version.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.
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.
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 ElsaWeb.
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).
Note:
W12 6.3 engines require special G13 coolant only: G A13A8JM1. No other coolant is allowed, and no other coolant can be mixed with this 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 ElsaWeb 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 ElsaWeb.
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 are subject to change and/or removal. Always check with your Parts Department and Repair Manuals for the latest information.