Thanks Edco

"6) Lastly, and this is a few years old and may have changed with BMW engines, I always added a measured amount of diesel fuel additive at every fill up. I had four baby food jars each with the right amount, and a funnel, and would pour the additive in FIRST. 4 baby food jars = one bottle of the additive, and I didnt have to mess with figuring out am I above or below the line in the cold and wind. Again, these were kept in a zip lock bag. So my little "kit" made for an easy fill up, and had me prepared for any slip ups."

At the risk of going to BMW prison for even asking, anyone comment on diesel additives?