Okay, I'll 'fess up to doing this on a previous Audi A4 PD130 Sport I owned..
Shell garage and I thought I was putting VPower diesel in it but.....
Tank was empty and I BRIMMED it.
Got about half a mile down the road and blow me, the damn thing stoppped!
Why did it do that, thinks I.... ohhhhh ssshheeeetttt....
However, my local garage just towed it up the road, drained the tank, flushed diesel though, ragged it round the bypass and VOILA, good as new.
Cost me £60.00
Try this first......