The latest on base stock trends

ExxonMobil on the changes, challenges and opportunities ahead

Significant technology advancements are needed to help organisations in the transportation, energy, lubrication and associated industries transition to a lower emissions future. Laura Pottorf, Global Base Stocks and Waxes Marketing Manager at ExxonMobil, talks to Insight about the trends she sees ahead, how they might impact the global base stocks market and the challenges and opportunities she anticipates.

Base stocks are used to develop advanced lubricant products that satisfy the performance requirements of hardware manufacturers while also helping products to stay reliably in operation for longer. Today’s drive towards a lower emissions future means advancements in technology are needed, which Laura expects are going to be largely focused on identifying cost efficient steps to respond to the key drivers.    

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Laura Pottorf, ExxonMobil

Let me start by talking about the base stock quality. Specifically performance requirements set by original equipment manufacturers dictate the attributes of the lubricants needed to protect their equipment. Now many of these performance requirements are set to achieve societal aspirations linked to energy reduction and environmental goals. Consequently, we expect to continue to see an increased demand for base oils that have lower viscosity, higher VI, lower pour point, lower CCS and lower NOACK. Now, manufacturing these high performing base stocks is intense from a capital and energy perspective. So continued innovation of higher performing catalysts that upgrade molecules and reduce yield loss, increasing flexibility of the feedstocks that can be processed using existing equipment and still meet the same base stock qualities, reducing energy usage through more efficient equipment and using advanced process and quality controls to optimise unit performance will probably all be important technology focus areas.

In addition to these considerations, Laura explains that, to intelligently engineer a base stock and the base stock slates they form, manufacturers need to understand how lubricants are blended. “Lubricants manufacturing technology that allows optimised blend performance and tankage usage might be another area where technology can make a difference. But, along with technology advancements, the industry also needs support for clear and consistent policy to incentivise solutions conducive to a lower emissions world and market driven solutions that meet consumer needs.”

Diversification increases

Laura says she sees a number of macro trends that can be expected to play an important role in the industry going forward. “The global population is expected to increase by two billion between now and 2050 and, as living standards continue to improve, we can expect to see a growing demand for personal mobility. By 2050, we estimate about one third of the automotive fleet will be in the US and Europe, 50% in Asia Pacific, and the remainder split across the rest of the world.” And, as Laura continues, "it is a changing vehicle landscape, one where diversity is increasing, making it more complex to support."

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Laura Pottorf, ExxonMobil

We see continued growth in electric and hydrogen fuelled vehicles with these engine types supplying 15 to 20% of the oil equivalent energy means of propulsion by 2050.
Another consideration is whether internal combustion engines will remain relevant over the next few decades. Now based on our estimates and analysis, we project that the number of vehicles expected to be fuelled by gasoline, diesel, natural gas, LPG and full-hybrids, so engines requiring lubrication based on internal combustion technologies, will be fairly stable in 2040 in comparison to 2023.

The commercial transportation segment will have the biggest volumetric growth driven by trucks, shipping and aviation. And this increase is a result of supply chain development globally to fulfil the needs of a growing economy and increasing living standards, and applications will also evolve to achieve more efficient operation and reduced emissions.

Lubricant opportunities

Clearly the continued use of internal combustion engines in both the personal mobility and commercial vehicle sectors means OEMs will need to make them as clean and efficient as possible. This trend will impact future lubricant formulations and base stock requirements.

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Laura Pottorf, ExxonMobil

For any vehicle that requires an internal combustion engine, the performance requirements will continue to evolve to meet stricter emissions regulations and improved fuel efficiency. Advanced engine technologies such as downsized engines, turbocharging and hybrid powertrains require lubricants with specific properties to handle higher temperatures, pressures and loads.


Developing lubricants that meet the demands of these technologies presents an opportunity for lubricant manufacturers to provide specialised products to enhance engine performance. As the adoption of battery electric vehicles increases the crankcase lubricant market may experience a shift in demand. While EVs don't require crankcase lubricants for their electric motors, there will still be a need for lubricants in other components such as gearboxes or differentials. Lubricant, manufacturers can focus on developing specialised high performance products for EVs, including thermal management fluids for batteries, specialised EV driveline lubricants and greases for ancillary equipment. So we're really anticipating a future lubricant world that is increasingly diverse with new challenges and new opportunities.

These trends will also impact the demand for lubricants and Laura suggests that the light-duty sector will remain relatively stable as increased demand for personal mobility in developing countries will be offset by increased electrification in developed countries. In the commercial transportation segment, which includes heavy-trucks, marine and aviation, the demand for lubricants is expected to remain strong. However, Laura does see changes to quality and performance requirements ahead.

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Laura Pottorf, ExxonMobil

While total demand will be steady, our expectation is that crankcase oils will shift toward higher performing lubricants and lower viscosities that likely will increase the demand for synthetic base stocks. Now, the sectors that are growing such as commercial transportation, electricity generation, industrial and manufacturing, support the increase in living standards around the world. And in general, these sectors need heavier lubricants and so there will be a steady demand for heavier base stocks. If you look at this trend from the perspective of base stock supply, we see continued growth in Group II and Group III to meet the increasing demand for improved efficiency in all sectors. We see a general trend toward ultra-low viscosities across multiple application segments driving the demand for high performance Group IV and Group V base oils.

Group III three will grow at a faster rate than Group II, driven by the need in engine oils for low viscosity, low volatility base stocks with good oxidation stability.

Group II will remain the predominant grade, as most of the applications that need heavy-duty commercial transportation and industrial lubricants can be manufactured with these base stocks. And Group I is likely to remain the prevalent choice for very heavy lubricants that require a heavy concentration of additives like marine lubricants.

Uncertainty ahead

The increased societal pressure for a lower emissions future means lower greenhouse gas (GHG) emission technologies are needed. However, in Laura’s view, right now there are still too many uncertainties for a single technology pathway or solution to be identified. Having said that, she has seen many examples of how the industry is evolving.

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Laura Pottorf, ExxonMobil

Firstly, there's been a very consistent drive to improve energy efficiency in manufacturing and fuel economy and engines.

Another clear change is the increase in the volume and qualities of re-refined base stocks. This has been enabled by the maturity in many jurisdictions of lubricant waste regulation, which has really supported the development of an extensive used oil collection market. And these collection networks have significantly reduced improper disposal of used oil and allowed for higher value use of reused lubricants. We would expect this trend to continue as regulators drive to improve collection and reuse options.

As for bio-based lubricants, I would say there's a growing interest. Bio-based lubricants offer advantages such as a potential reduced toxicity and a potentially lower carbon footprint compared to conventional lubricants. Having said this, it's still a smaller layer of the market. Going forward it'll be interesting to see how technological innovation may make some of these solutions viable in a wider range of applications.

With sustainability and decarbonisation high on the agenda of organisations in the mobility, lubricants and base stocks industries, Laura anticipates a period of significant change ahead, where staying close to the market and understanding customers' needs will be essential.  

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Laura Pottorf, ExxonMobil

Because so many things are changing, it's important for suppliers to work with customers to understand their changing needs and develop a market driven value proposition that meets their goals. 

In Laura’s view, regulation, technology and customer preferences are all going to be important factors that shape the base stocks of the future. And, given the evolution of the market, it is going to be a combination of all these factors in addition to technology advancements that ultimately determine what feasible solutions are available, in what time period and at what scale.

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