contaminated

Of late I have had some starting issues with my 2.0 TDi Stylance being very hard to start from hot. To get it started it would turn over and over and would require some throttle to finally get it going. Also I noted on a cold start quite a lot of grey/blue smoke once intially started. I've...

Anyone seen all the hoo-hah about this? I'm gonna have a go at Tesco, I've just put 50 litres of unleaded in my Passat PD and it's died on me ;) :D