As title says I own a 2007 1.9 TDI with 130,000 miles on the clock. The last few months I've noticed that the MPG isn't what it should be for a 1.9. I see myself pulling into a petrol station more often than not. I've also noticed that the car smokes on certain occasions, E.G. when starting the car and when moving off in traffic. I've been doing a bit of reasurch online and it seems that adding Redex to the tank should cure or at least help these issues. Now I've spoken to a few people and I've heared mixed reviews about it. Some have told me to steer clear of it as I'll have nothing but trouble after. Others have said once they added Redex to there tank there was a considerable gain in performance and efficency. As I've never used Redex I'm just wondering what you guys views are on this product.