for the first time ever today, i started filling my tdi with unleaded!! i luckily soon noticed, so have only put 1.9 litres in. then i thought, i dont want to fill it up with diesel in case i've knackered it, so i only put 10 litres in. it drove to work ok, but should i fill it up on the way home to dilute the petrol further, if its not going to effect it much??