Natural Resources committee  I have a paper here that provides a chart you could look at. It basically shows, as you add more and more biodiesel, how that affects cloud point and what the effect of some additives could be. I'd be quite happy to leave that behind, if you want to have that.

Natural Resources committee  That's one of the pluses, but there are pluses and minuses. And the minus, the big one, was mentioned by Jesse.

Natural Resources committee  It's cold flow because of Canadian conditions. And there's a significant difference between biodiesel and fossil-fuel-based diesel.

Natural Resources committee  The measure that's used is called cloud point, and it's in degrees Celsius.

Natural Resources committee  What I have for biodiesel is anywhere from minus 3 degrees Celsius to plus 11 degrees Celsius, whereas ultra-low-sulphur diesel is between minus 1 degree Celsius and minus 47 degrees Celsius. That's really the big discrepancy. So if you get very cold in Canada, you have a problem.

Natural Resources committee  There are additives that one can add to the blend to counter that effect, but it's very limited, how much you can do. You can improve it by one or two degrees. That's basically the effect of additives. That's the fundamental issue on the negative side. The other one, quite honestly, is that the sources of biodiesel are so varied.

Natural Resources committee  First of all, low-sulphur diesel is essentially a new product that basically starts June 1 for on-road vehicles. It hasn't been extensively tested with biodiesel, for example, so we're not exactly sure how that's going to work out. It's not the same as testing it with 500 parts per million, so it's something that lies ahead of us to test out, to make sure....