What is it with Germany and making great windshield washer fluid? This is another OEM product, this time from BMW. Essentially, you can simply re-read the description of the product above, and every time we say Mercedes Benz substitute in the word BMW.
One interesting thing to note with this product is that it is slightly cheaper than the Mercedes version, though it is a very small bottle. You may have to buy two, which will give you about a liter of product, but for a slightly lower price than one bottle of Mercedes fluid.