{"id":22689,"date":"2026-08-26T06:00:38","date_gmt":"2026-08-26T12:00:38","guid":{"rendered":"https:\/\/ulprospector.ul.com\/?p=22689"},"modified":"2026-08-19T13:57:45","modified_gmt":"2026-08-19T19:57:45","slug":"evs-are-reshaping-the-lubricants-industry","status":"publish","type":"post","link":"https:\/\/ulprospector.ul.com\/22689\/evs-are-reshaping-the-lubricants-industry\/","title":{"rendered":"EVs Are Reshaping the Lubricants Industry"},"content":{"rendered":"

\"\"The transition to electric vehicles is often discussed as a threat to lubricant demand because battery-electric vehicles eliminate engine oils and reduce the number of lubricated components. While EVs use fewer traditional lubricants than internal combustion engine vehicles, that view tells only part of the story.<\/p>\n

For lubricant manufacturers, additive suppliers and formulators, electrification is creating highly demanding fluid challenges. The market is shifting away from commodity lubrication solutions and toward engineered fluids capable of managing electrical, thermal, mechanical and material-compatibility requirements simultaneously.<\/p>\n

Rather than reducing the need for innovation, EVs are accelerating it.<\/p>\n

The rise of e-fluids<\/h3>\n

Modern EV drivetrains increasingly integrate electric motors, power electronics, bearings and reduction gears into compact e-axles. These systems create demand for fluids that can support gear and bearing lubrication, heat transfer, corrosion protection, electrical performance, and material compatibility.<\/p>\n

Industry reviews describe integrated e-modules as applications in which fluids may need to balance tribological, rheological, electrical and thermal properties while interacting with copper wiring, high-voltage components, and specialized polymers.<\/p>\n

This is a significant departure from conventional automotive lubricants, where electrical behavior and direct cooling are less central to the fluid design brief. The result is growing interest in fluids specifically designed for EV applications rather than simple adaptations of traditional gear oils or automatic transmission fluids.<\/p>\n

Thermal management will become a primary design driver<\/h3>\n

Battery charging speed, driving range, power density, and battery life are closely connected to heat management. As EV systems operate at higher power, efficient thermal control becomes a critical design constraint.<\/p>\n

Recent research examines dielectric coolant liquids for immersion-based battery cooling because these fluids allow direct contact with electrically active components while maintaining insulation performance. Research is also exploring hybrid approaches that combine dielectric fluids with phase-change materials to buffer short, high-power thermal events.<\/p>\n

UL Solutions materials describe direct oil cooling as an approach in which specialized dielectric oil is sprayed onto motor windings or circulated through motor components. The same materials state that direct oil cooling can remove heat more effectively than water jackets alone and support smaller motor designs.<\/p>\n

For formulators, thermal performance must therefore be evaluated alongside wear protection and oxidation control. Important properties include heat-transfer behavior, dielectric reliability, electrical conductivity, viscosity, and long-term thermal stability.<\/p>\n

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Material compatibility requirements are expanding<\/h3>\n

EV platforms introduce copper windings, electrical insulation systems, magnets, advanced polymers, and other materials that may contact lubricating or cooling fluids.<\/p>\n

UL Solutions resources emphasize compatibility between cooling fluids and solid insulation materials used in EV electrical systems. They also note that lubricant additives can be reactive and aggressive at elevated temperatures, creating a need to verify whether insulation materials retain their key properties after fluid exposure.<\/p>\n

A formulation that performs well in a gear or bearing test may still be unsuitable if it damages copper, electrical insulation, elastomers or polymers. Compatibility testing is therefore becoming a larger part of fluid qualification.<\/p>\n

Higher efficiency is increasing interest in lower viscosity<\/h3>\n

Range and energy efficiency remain important EV design priorities. Reducing drivetrain friction and churning losses can support efficiency, which increases interest in lower-viscosity e-fluids.<\/p>\n

The formulation challenge is to reduce viscosity without sacrificing anti-wear protection, oxidation stability, bearing durability, gear protection, or material compatibility. This places greater emphasis on base-fluid selection, additive efficiency, and validation under high-speed electric-drive conditions.<\/p>\n

Sustainability pressures are influencing product development<\/h3>\n

Electrification is developing alongside wider pressure on the lubricant industry<\/a> to address hazard classifications, PFAS, environmental toxicity, biodegradability, and lifecycle impacts.<\/p>\n

Industry materials describe interest in bio-based and lower-toxicity approaches, but also identify technical barriers including hydrolytic stability, thermo-oxidative stability, seal swelling, solubility, performance, cost and global availability.<\/p>\n

For EV fluids, sustainability expectations may increasingly encompass both vehicle efficiency and the environmental profile of the fluid. Formulators should expect closer evaluation of raw-material choices<\/a>, hazardous substance restrictions, product longevity, and end-of-life considerations.<\/p>\n

What these trends mean for formulators<\/h3>\n

The next stage of electrification is not simply a story of lower lubricant volume. It is a change in the type and complexity of fluid performance the market requires. Key development areas include:<\/p>\n