Beyond the standard oil and filter changes, replacing engine coolant is critical at this milestone. Coolant prevents the engine from overheating and protects against corrosion. Regular coolant replacement maintains proper engine temperature, ensuring components function correctly and efficiently. Coolant degradation can lead to overheating if left unattended, which risks severe engine damage and costly repairs.

Replacing transmission fluid at this stage ensures smooth gear shifts and prevents transmission wear. Checking and replacing brakes and pads is essential for safety, while brake fluid changes maintain hydraulic pressure, ensuring responsive braking and preventing brake system failure. You can’t risk driving with old brakes because worn brake pads and old fluid can increase stopping distances, increasing the risk of accidents.

Hardwearing parts, like belts, need replacing at 90,000 miles. Over time, belts can wear out, leading to potential engine damage. Often, worn belts snap, causing significant engine damage and roadside breakdowns. Also, you need to continue with regular oil, filter, coolant, brake, and transmission fluid changes to keep all systems functioning smoothly, maintaining your car’s reliability and performance.