Do you know how to choose the right brake fluid?
After having your vehicle professionally inspected at a repair shop, you may be told that the brake fluid level is low or that you should consider replacing it. Do you know which factors the experts consider when selecting the best product? Answer the following questions to test your knowledge.
- What does the DOT classification system use to differentiate between DOT 3, DOT 4 and DOT 5 fluids?
a) Production cost
b) Boiling point
c) Vehicle type
2. Which of these criteria doesn’t influence the type of fluid to use?
a) Your driving style
b) The braking system
c) The vehicle’s model year
3. What sign indicates that your brake fluid is no longer in good condition?
a) The fluid is dark in colour
b) Your braking distance has increased
c) Your brake pedal feels soft
Answers
- b) The DOT classification system differentiates between fluids based on their boiling points. The fluid must absorb the heat generated by the braking friction without boiling to ensure optimal vehicle performance.
2. c) The vehicle’s model year does not directly affect the fluid choice. Different systems (ABS, discs) and braking frequencies generate different heat levels.
3. a) Increased braking distance and a soft brake pedal may indicate that your fluid level is low but not necessarily out of date. Test strips can be used to reveal the condition of the fluid. The darker the colour, the more worn it is.
While DOT 5 fluids are often used for specialized, high-performance vehicles, DOT 3 and DOT 4 are the most common and affordable. Since making the right choice can seem complex, the information in your owner’s manual and the advice of a professional are essential. Need to top up or replace your brake fluid? Make an appointment at an M 360 Mechanic near you.