My mistake, I didn't read the post properly
as I got all excited at the mention of an oil cooler.
I've learnt something new today MJ et al - apologies for polluting this thread with wrong information.
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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)