[Somerandomguy]

The sucky machine is connected up in the ATF circuit so that it pumps in as much oil as it removes. This means that all the oil is replaced, including from the torque convertor.

The official flush method only removes about half of the ATF per flush, so requires three empty and refill cycles to get most of it out.

The other factor for consideration is which ATF to use as there are 3 specs. The yellow ATF (original fill spec), Blue and now Green. the blue was original fill for the W12 but was then specified for other D3 boxes to resolve a hooting noise, this has now been replaced by the green. The TSB for the hoot made it clear that a software upgrade to the gearbox was required for the blue fluid, but theres no mention of this for the green.

Price wise, the yellow fluid is the cheapest, at about £18 per litre I think,then the blue and finally the green is £34 per litre - three flushes gets very expensive as youll need 12-14 litres. The yellow is Lifeguard 6, the blue is Lifeguard 6+ (Audi part. G055162A2) and the green is Lifeguard 8 (audi pn G060162A2)


I did bite the bullet and changed the ATF myself and it was fairly easy to drop the pan, change the filter and refill three times, but the exhaust on mine doesn't get in the way.i also made a filling tool as you have to fill from below.

I havent updated the software on the ECU as I used the green fluid and ELSA doesnt reference the update. If i was to do it again, i would go for the yellow oil to keep the cost down.