Usual solution was employed - fill up 2 litre container with hot water, add dishwasher tablet and wait for it to dissolve fully. Fill up a second container with hot water whilst waiting. Added from the NSF (see what I did there, The_Laird) in the gap, and moments later, a pleasing gush of water came out from under the car. It's now clean as a whistle under the bonnet, but after reversing the car (was testing the MJ brake block upgrade), I noticed that water was only vented out of the passenger side. I suspect that I may have to revisit this again.
With the benefit of hindsight, I wish I'd taken the opportunity of snipping off the ends on the fat drainage tubes either side of the flywheel housing when my gearbox was replaced in 2014, if I remember correctly.
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2010 B8 S5 Sportback quattro 3.0 Supercharged in Sprint Blue (current girlfriend)
2000 D2 A8L quattro 4.2 in Audi silver (my ex-girlfriend)
Last edited by johnny_quattro; 8th November 2020 at 02:55 PM.
Reason: underscore, not a hyphen
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