new storage regulations

[iaaems]

My diesel vehicle is about seven years old and misfires from time to time - local garage, who service it, suggested that I put 'proper' diesel in it as I had been using our local supermarket forecourt for fuel as it was quite a bit cheaper.
So I put a tank full of 'branded product' in it and there was no misfire at all. The inference was that the supermarkets specify the minimum quality of product that they can get away with whilst the 'brands' are slightly better in quality and more expensive.
Have to agree that it is just not worth taking too many risks.