Don't Wait for Problems: The Right Time to Replace Your Car's Brake Fluid
SOLO — Preparing for mudik travel requires thorough car maintenance, including optimising the performance of the vehicle that will be used. One component that cannot be overlooked is the braking system.
In addition to ensuring the braking system functions properly, car owners also need to replace brake fluid that has deteriorated or whose quality has declined.
The quality of brake fluid is difficult to assess visually, which is why there is a recommended replacement interval for every vehicle that travels a certain distance.
“Generally, brake fluid needs to be replaced regularly every 40,000 kilometres, though some manufacturers recommend every 20,000 kilometres depending on the product. Replacement must be performed before the quality deteriorates,” said Imun, speaking to the media on Friday (27 February 2026).
Consumers can also check the quality by its colour. If the brake fluid appears cloudy or dark, it should be replaced immediately. This indicates that the water content is high and there is a significant risk of vapour lock when the brakes become hot.
Ahmad Wildan, Chair of the Road Transport Traffic Sub-committee at the National Committee for Transportation Safety (KNKT), stated that if brake fluid quality has deteriorated, vapour lock becomes likely to occur.
“Brake fluid boils when it reaches its boiling point, which is caused by the presence of water content in the brake fluid. If there is just 3 per cent water content in the brake fluid, the boiling point will drop by 50 degrees Celsius,” said Wildan.
“It is advisable to purchase a brake fluid tester. This tool is inexpensive and can be purchased anywhere, including on online stores, so that drivers can ensure the condition of their brake fluid at any time,” said Wildan.
Wildan stated that the device will accurately detect water content in the brake fluid, and the device’s readings are easy to understand.
Therefore, before using the car for mudik travel, consumers should replace their brake fluid at their regular service centre.