Castrol ON for electric cars
Castrol ON advanced EV Fluids help to bring a new era for electric vehicles.
EV progress is ON
Global electric vehicle sales surpassed 20 million units in 2025, up from 17.3 million in 20241, accelerating the shift towards electric mobility. As industry leaders, Castrol ON collaborates with major OEMs from the earliest stages of development, co-engineering advanced EV Fluids to support performance and optimise efficiency.
Castrol ON is our high-performance range of EV Thermal Fluids, EV Transmission Fluids and EV Greases.
Together, we're driving progress for EVs globally
Castrol ON collaborates with automotive experts to redefine the performance of electric vehicles. Our advanced EV Fluids help to bring a new era for electric vehicles.
3 out of 4 major vehicle manufacturers use Castrol EV Fluids2
EV progress is ON
Castrol ON is our range of advanced EV Transmission Fluids, EV Thermal Fluids and EV Greases that work together to bring a new era for electric vehicles.
The Castrol ON EV range
The unique challenges of electric vehicles
Castrol ON helps protect electric cars in three critical areas:
The demands on EV transmissions are more severe than those of conventional transmissions, as an e-motor in an electric vehicle can deliver maximum torque at low speeds.
In addition, hardware solutions are evolving from separate electric motors and transmissions to a combined system, creating new challenges. Castrol’s EV Fluids have the appropriate dielectric properties and component compatibility to ensure durability over their lifetime.
Castrol ON EV Transmission Fluids help reduce energy losses in the drivetrain system and improve EV transmission efficiency.
The thermal management of EV’s batteries is critical to their safe operation and longevity.
Batteries can suffer from excessive heat for a number of reasons. All batteries heat up when charged and discharged due to internal resistance – something which increases over time due to battery degradation as the number of charge cycles increases. High current and ultrafast charging also pushes temperatures even higher.
Castrol ON EV Thermal Fluids feature advanced properties developed to improve battery thermal management and help extend battery life.
Electric vehicles need specialised greases that are both compatible with electrical components and able to deal with the extra demands placed on mechanical components.
These components can experience higher loads, relative speeds, and greater power density compared to traditional internal combustion engines. High instantaneous torque from the e-motor puts significant stress on the bearings and gear components.
Castrol ON EV Greases are designed to overcome the unique challenges faced by electric vehicles – delivering optimum efficiency and extending the life of EVs components.
Frequently asked questions
No, your electric car doesn’t need engine oil. Unlike traditional internal combustion engines and hybrid vehicles, EV motors are powered by a high-performance battery with fewer moving parts, so engine oil isn’t required for lubrication.
But, electric cars still need some specific lubricants to combat their unique challenges:
- EV Transmission Fluids: Essential for smooth power delivery.
- EV Thermal Fluids: Helps regulate battery temperature, ensuring efficiency and longevity.
- EV Greases: Keeps moving parts like bearings well-lubricated for reliability.
With a reduced amount of fluids and greases, electric cars offer a simpler and cleaner driving experience.
Explore our latest whitepaper: ON Road
Drawing on insights from more than 3,000 drivers across China, Germany and the US, this report explores how attitudes towards electric vehicles are changing – from the key lure factors driving EV adoption to how the experience compares with traditional ICE vehicles.
It highlights the emotional and functional benefits accelerating the shift to electric mobility, including a new insight that could revolutionise the industry going forward.
The journey towards tranquillity
The electric vehicle revolution is here, not on its way. At Castrol, we’re championing this change, demonstrating that EVs aren’t about compromise, but about reshaping what drivers expect and value.
Discover how Castrol is leading the industry and driving innovation across electric mobility. You’ll also find a range of blog and news articles – from thought leadership pieces to the latest developments shaping the sector.
Castrol electric vehicle motorsport partnerships
Find out more about who we collaborate with, to create leading EV Fluids that drive performance.
