Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to replace a master cylinder [title] Locate the various components of the vehicle's brake system. [substeps] Use your vehicle's manual to identify these components. Locate the brake fluid reservoir, the brake master cylinder, the brake fluid level sensor, and the brake fluid lines.

Ending1: Using either 1 (e.g., grease or brake oil) or 2 (e.g., vehicle dioxide) lines, you can fix the brake fluid problem. [title] Remove the brake fluid and brake fluid lines with the asbestos removal tool. Ending2: The brake fluid reservoir is usually at the top of the brake system and contains brake fluid. It can be identified by the presence of a threaded cap on top of it. Ending3: Make sure everything fits snugly inside the vehicle. You may need to look in the glove compartment to find the tire pump or fill line. Ending4: Make sure to get both the brake fluid reservoir and brake fluid line properly. This will prevent the brake fluid from weakening the pipe and leaking out.

Answer format: ending1/ending2/ending3/ending4