From the shop manual...
Coolant protection
Water vs Coolant
Above 16 C {4 F} 65% 35%
Above 26 C {15 F} 55% 45%
Above 40 C {40 F} 45% 55%
Procedure to change...
COOLING SYSTEM
ENGINE COOLANT REPLACEMENT
A3U011215001W03
1. Drain the coolant in the coolant reservoir.
2. Remove the radiator cap and loosen the radiator
drain plug.
3. Drain the coolant into a container.
4. Flush the cooling system with water until all
traces of color are gone.
5. Let the system drain completely.
6. Tighten the radiator drain plug.
Caution
The engine has aluminum parts that can
be damaged by alcohol or methanol
antifreeze. Do not use alcohol or
methanol in the cooling system. Use only
ethylene-glycol-based coolant.
Use only soft (demineralized) water in the
coolant mixture. Water that contains
minerals will cut down on the coolant's
effectiveness.
Engine coolant will damage paint. Rinse
it off quickly.
7. Referring to the following chart, select proper
volume percentage of the water and coolant.
Slowly pour the coolant into the radiator up to the
coolant filler port.
Filling pace
1.0 L {1.1 US qt, 0.9 Imp qt}/min. [max]
Antifreeze solution mixture percentage
8. Pour coolant into the reservoir up to the FULL mark on the coolant reservoir.
9. Fully install the radiator cap.
Caution
If the coolant temperature becomes too high, stop the engine to prevent it from overheating.
10. Start the engine and let it idle for approx. 10 min.
11. After engine warms up, perform the following steps:
(1) Run the engine at 2,500 rpm for 5 min.
(2) Run the engine at 3,000 rpm for 5 s: then return to idling. Repeat this several times.
12. Stop the engine and wait until it is cool.
13. Inspect the coolant level. If it is low, repeat Step 712.
14. Verify there is no leakage.
End Of Sie