Diesel is at the center of an international supply squeeze, with prices rising to historic highs. Andrew Sheets and Martijn Rats unpack why this industrial fuel matters far beyond the pump. Read more insights from Morgan Stanley. ----- Transcript ----- Andrew Sheets: Welcome to Thoughts on the Market. I'm Andrew Sheets, Global Head of Fixed Income Research at Morgan Stanley. Martijn Rats: And I'm Martijn Rats, Head of Commodity Research at Morgan Stanley. Andrew Sheets: Today, the secret life of diesel and why there's so much attention on it. It's Thursday, September 24th at 2pm in London. Diesel is a fuel that I think a lot of investors may be aware of but not familiar with, so to speak. It's often the other price that you see when you're driving down the road. But Martijn, it's incredibly important for the industrial side of the economy and unusually disrupted by current geopolitical events. And so, I'd like to really start at the top, or technically the middle of the barrel, so to speak. What is diesel and what makes it so special? Martijn Rats: Yeah. When people talk about diesel at the moment, they really talk about sort of three things combined. They talk about outright diesel, as well as jet fuel and also heating oil. These are effectively part of the same pool of molecules coming out of the refinery. And so, when you look at that sort of pool of molecules, you talk about the things that fuel trucks, trains, ships, tractors in agriculture, excavators, generators, home heating. It is a molecule that has a tremendously broad range of applications. It's really the fuel of the industrial economy. One of the characteristics of diesel is that it has very high energy density. In contrast to, say, gasoline, electrifying the uses of diesel is harder because it carries so much punch. Andrew Sheets: And why has there been so much on diesel recently, given the current energy disruption in these geopolitical events? Martijn Rats: Yeah. So, the global refining system normally processes about 85 million barrels a day of crude oil and from that, it makes a range of products. Diesel is at the heart of it. But it's only one of many. At the moment, we are short in terms of refinery runs, i.e., the amount of crude that refineries process to the extent of about somewhere between 4 to 5 million barrels a day. So, 4 to 5 million barrels a day on a base of 85, you're talking about 5 to 6 percent. That may not sound like a lot, but in the world of commodities, where prices really depend on relatively small changes, that is actually a very large amount. That sort of 4 or 5 million barrels a day of refineries that are currently not running, they are fifty-fifty, either in the Middle East or in Russia. In the Middle East, it is a story of the Strait of Hormuz and refineries locked behind the strait, and they can't export their products. Some of them are also damaged, although information on that is hard to find. And then the other half that is out is in Russia, where they are effectively taken out by Ukrainian drone attacks. In total, that's sort of 4 to 5 million barrels a day of refining capacity that is not running. 40 percent of their output would typically be diesel, so we are missing something like 1.5 million barrels a day of global diesel supply, all into the seaborne market. Now, I mentioned the seaborne market because the seaborne market is the traded market where traders buy and sell cargoes to each other. And that is where, from a physical market perspective, price formation takes place. The global seaborne diesel market is an 8 million barrel a day market. And so given that all of the supply we're missing is also into the seaborne market, the comparison to make is to say that we're missing about, sort of, close to 1.5 million barrels out of an 8 million barrel a day traded… Andrew Sheets: A pretty large percentage, yeah. Martijn Rats: Absolutely. That is very, very large, and that is hard to offset. Every other refinery around the world that can run is running flat out. The margins are all-time highs. So, there's a lot of incentive to run very hard. But nevertheless, it's left the market very, very tight. Andrew Sheets: So, that tightness in the market shows up via price. And just talk us through a little bit about what has happened to the price of diesel and its related fuels. You know, I think a lot of listeners are probably more familiar with the price of gasoline. They're more familiar with the barrel of oil that's often the quoted benchmark in the market. But what has been happening to these diesel prices? Martijn Rats: Yeah. So, the way to really tell that story is to look at what we call the crack spread. So, making a barrel of refined product, including diesel, of course, you start with crude oil. So, the price of crude oil impacts the price of the refined product. So, quite often we focus more on the uplift from the price of crude to get to the price of the refined product, and we call that the crack spread. Under normal conditions, say a year ago, crude was $70, and then the price of diesel was another $20 on top of that. And so, you got to diesel being 70 plus 20 is $90 per barrel. At the moment, crude is higher. Crude is about $100 per barrel. Crude has rallied. But the increment on top of it has spiked. So, a couple of days ago we got to all-time high nominal term diesel prices over $200 per barrel. So, we're now having a situation that is [$]100 for crude plus another [$]100 to get to the diesel price. So, the crack spread is something that normally lives in a range of, like when the diesel market is weak, maybe sort of $8, $9, $10. When the market is normal, close to $20. If it's very strong, $25 to $30. Now, that incremental crack spread is $100 per barrel, and that is something that we've not seen before. It is stronger than it was in 2022, when we also had a moment of a severe diesel crisis. Didn't last very long in 2022, but the crack spread got to sort of $60, $70 per barrel. So, that highlights the extent to which the price of diesel has rallied. Andrew Sheets: So, Martijn, you mentioned this crack spread. You know, I think if we all go back to our organic chemistry, this is the refineries literally cracking a barrel of oil down into constituent distillates and other pieces. But given those very high prices for diesel, why don't the refiners just refine more? Why aren't the incentives increasing production? What's getting in the way of that? Martijn Rats: Yeah. That's just a matter of like the physical reality of the system. So, when you build a refinery, you often quite think about two things. What crudes are available to me. So, if you're in the United States, you have U.S. shale crudes, or you have crude from Mexico, Canada. And based on those, you then also think about, you know, what is my consumption, where I am likely to be. And based on that, you build a certain configuration – that converts the crudes that you can buy into the products that your specific customer set might need. You fix the configuration of the refinery at the time you build it. And once it's built, there is a little bit of flexibility to say, "Oh, well, maybe at the moment I make a little bit more diesel and a little bit less gasoline," and change the – what we call the yield of these products. Like a little bit within, you know, a few percentage points range. But that flexibility is small, so the only thing you can do to make more diesel is to run the refinery at 100 percent utilization. That is currently where we are. That has already happened. And then you put in the crude that you buy, you get the products for which your refinery is then designed, and that's it. There are no other… Andrew Sheets: You can’t just turn a big dial that says more diesel. Martijn Rats: No. You can't say, "Oh, well, I don't like my naphtha output this week, so let's not make any naphtha for the chemical industry. Let's only make diesel." It's not contained in the barrel of crude and the kits that you have – takes many years to rebuild and probably very expensive. So you're kind of then stuck. I mean, it is what it is. Andrew Sheets: So Martijn, where is this leaving the global story? You know, if we think about just the relative price of this. Again, you mentioned it's an incredibly important fuel for agriculture, for industry… What's it looking like kind of across the major regions? Martijn Rats: Yeah. Look, it leaves a very tight market at the moment. I mean, it's relatively straightforward. The price of diesel depends very heavily on how the geopolitics of the Middle East and Russia sort of play out. So, in terms of the traded price that you see on the screen every day, it swings around very heavily with how the market foresees the future with regards to these two conflicts. So, one week things flare up, the price of diesel rallies. The following week the market feels a bit more optimistic maybe around a deal, so then things sort of sell off. So, we have to live with that sort of geopolitical sort of reality. But other than that, those who can afford it pay a high price to effectively erode demand amongst sets of consumers who cannot afford these higher prices. You see a substitution, for example, what I thought was very interesting last week. Some of the train companies in the United States were talking about a truck-to-train substitution of very high levels of cargo loads on trains because simply the diesel on trucks is too expensive. So, you see those behavioral changes come through. Andrew Sheets: But that point about demand destruction is really important because, you know, a point that you've made over many years is this idea that the solution to higher prices is higher prices. That that reduces the demand for the fuel, that helps these markets recorrect. And yet, you know, we're hitting prices in diesel that are near all-time high
