Why should you drain air tanks regularly?
a.To prevent the compressor from overheating
b.To remove water and oil that collect and can damage the brakes
c.To reduce air pressure to safe levels
d.To test the low air pressure warning
Explanation
Compressed air contains water and compressor oil. These accumulate in air tanks and can damage the braking system, cause corrosion, and reduce braking effectiveness, especially in cold weather when water can freeze.