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audi a8 d3/d4 v8 4.2l engine coolant leak fixed/oil cooler pipe replacement     More info

I did end up using an metal pipe. The project took me actually 4 hours.

If you start working on it and already know the steps, it can be done way faster.

I read that all 4.2l engines have this problem!

This Audi had water cooled alternator, and it took me maybe 15 mins to reinstall those line on oil cooler back, but it's not too bad.

Overall I'm happy with the result, and it saved me from replacing water pump, etc.