PriolubeTM EF 3446 is a fully synthetic dielectric ester base oil. It has exceptionally low viscosity while offering low wear and very low traction. Suitable for creating efficient, next-generation transmission, e-axle and gearbox lubricants, it is compatible with Group III and Group IV base oils, industry-standard elastomers and copper and is highly oxidatively stable.
Priolube EF 3446 is also suitable for formulating low viscosity cooling fluids for motors, batteries and power electronics.
The value we bring
Low viscosity
Outstanding traction reduction
Excellent load handling capabilities
High biobased carbon content and biodegradable*
See double-digit traction reduction- the effect of adding Priolube EF 3446 to Group III and IV base oils
In Group III, adding 20% Priolube EF 3446 reduced traction by an average of 26% across the complete slide roll ratio vs untreated Group III. In Group IV, the average reduction was 11%. Test was performed at 2m/s, 40°C with a 16N load.
Features and main specifications
Features & benefits
| Feature | Benefit |
|---|---|
| Compatible with many standard automotive elastomers |
Formulated with existing engineering solutions |
| High breakdown voltage | Create formulations that have the required electric performance characteristics |
| High biobased carbon content* | Formulate towards your sustainability targets |
| No halogenated materials intentionally added | There is global scrutiny of products containing halogenated materials |
| Readily biodegradable |
Allows the formulator to create biodegradable fluids |
| Hydrolytically stable | Will not break down in the presence of water |
| Oxidatively stable | Improved fluid lifetime |
| High flash point | Create formulations with higher flash points for applications that require elevated temperatures |
| High thermal conductivity | Good heat removal properties |
| Excellent load handling capabilities | Improves FZG on SRV (DIN 51834-4) performance on Group III base oils |
| Very low viscosity | Low churning and pumping losses |
*Biobased carbon content according to ASTM D6866
Main specifications
| Property | Value |
|---|---|
| Kinematic viscosity at 40°C | 6.1 cSt |
| Kinematic viscosity at 100°C | 2.0 cSt |
| Viscosity index | 135 |
| Flash point (COC) | 204°C |
| NOACK volatility at 200°C | 9.6% |
Explore our other synthetic esters for EV applications
Priolube™ EF 7010
Our most advanced EV-specific ester base oil creates high-performance, high-efficiency transmission, gearbox and e-axle lubricants without compromising elastomer compatibility even at high inclusion rates. (Kinematic viscosity at 100º C:2.9 cSt)
Priolube™ EF 3221
Our low-viscosity, fully synthetic dielectric ester base oil optimizes cooling performance in immersion cooling applications. Compatible with Group IV PAO and Group III mineral oil formulations. (Kinematic viscosity at 100º C:2.4 cSt)
From a world leader in ester base oils
As the world moves to an electrified future, we are developing innovative, novel products to address the needs of future mobility. With over 40 years of lubricant formulation expertise, we are ready to discuss your formulation requirements and can support your technical development work wherever you are. We look forward to speaking to you.
*Biobased carbon content based on ASTM D6866