ON EV Transmission Fluid W2
EV Transmission Fluid
Description
Castrol ON EV Transmission Fluid W2 is a full synthetic, high performance, high efficiency fluid for
transmissions with wet e-Motors, i.e., where the e-motor operates immersed in the EV Transmission
Fluid. It is an advanced EV Transmission Fluid that helps extend the life of the drivetrain system and
go further¹ on a single charge. This next generation transmission fluid has specially developed, low
viscosity technology that delivers low electrical conductivity, enhanced system protection and helps
the e-motor run cooler enabling it to operate at high efficiency.
¹vs mass market EV factory fill fluid *Castrol EV Fluids benefits are demonstrated in bespoke testing and development.
FOR PROFESSIONAL USE ONLY
Advantages
1. Outstanding dielectric properties:
low conductivity
high resistance
high breakdown voltage
2. Excellent copper corrosion protection
3. Excellent pumpability at low operating temperatures
4. Exceptional cold flow properties
5. Excellent thermal and oxidative stability
6. Exceptional temperature reduction through reduced friction
7. Very good gear protection
8. Excellent thermal properties
*please check with your vehicle manufacturer for the right type of fluid for your electric vehicle
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Typical Characteristics
ON EV Transmission Fluid W2
SAE Grade - 75W
Density @ 15C, Relative ASTM D4052 g/ml 0.851
Viscosity, Kinematic 100C ASTM D445 mm²/s 5.5
Viscosity, Kinematic 40C ASTM D445 mm²/s 18
Viscosity Index ASTM D2270 None 300
Viscosity, Brookfield @ -40C (75W) ASTM D2983 mPa.s (cP) 2200
Pour Point ASTM D97 °C -51
Flash Point, COC ASTM D92 °C 234
Foam Tendency , Seq I / II / III ASTM D892 ml 0 / 10 / 0
ON EV Transmission Fluid W2
17 Jan 2024
Castrol, the Castrol logo and related marks are trademarks of Castrol Limited, used under licence.
This data sheet and the information it contains is believed to be accurate as of the date of printing. However, no warranty or representation, express or implied, is
made as to its accuracy or completeness. Data provided is based on standard tests under laboratory conditions and is given as a guide only. Users are advised
to ensure that they refer to the latest version of this data sheet. It is the responsibility of the user to evaluate and use products safely, to assess suitability for the
intended application and to comply with all applicable laws and regulations. Safety Data Sheets are available for all our products and should be consulted for
appropriate information regarding storage, safe handling, and disposal of the product. No responsibility is taken by either BP plc or its subsidiaries for any
damage or injury resulting from abnormal use of the material, from any failure to adhere to recommendations, or from hazards inherent in the nature of the
material. All products, services and information supplied are provided under our standard conditions of sale. You should consult our local representative if you
require any further information.
Castrol (UK) Limited, PO BOX 354, Chertsey Road, Sunbury On Thames, Middlesex, TW16 9AW
www.castrol.com
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