It does seem to suggest that monoglycerides when mixed with fossil fuels can cause precipitation at low temperatures. For us "pure" biodiesellers, I guess that isn't a problem unless we start adding petrol in winter to keep it liquid (when I have done that in the past I've always mixed and stood outside for at least 24h in case of precipitation). But I've long since abandoned petrol as a winter additive and just stuck with skimming the liquid fuel from the top of storage instead.