| Aspect | Dot 3 | Dot 4 |
|---|
| Certifications | Typically no specific certification required | Typically no specific certification required |
| Work Environment | Automotive brake systems, hydraulic systems | Automotive brake systems, hydraulic systems |
| Industry Usage | Commonly used in older vehicles and hydraulic systems | Newer vehicles and high-performance brake systems |
| Performance | Lower temperature tolerance, older standards | Higher temperature tolerance, improved performance |
Dot 3 and Dot 4 are both brake fluids used in automotive braking systems. Dot 4 offers higher boiling points and better performance in high-temperature conditions compared to Dot 3. While both are used in similar environments, Dot 4 is preferred for newer, high-performance vehicles, whereas Dot 3 is common in older models.