Thanks
Thanks for info, Will try a 50% mix to start and then after a week or two change filter. Let you know how it goes.
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Coupe quattro 1986:-~450bhp + loooong list of mods!
Audi A7 Bi-TDI SLine Black edition 2015 mapped to produce 600lb/ft torque!
Audi S4 4.2 V8 cabriolet 2004:-
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