See Figures 1 and 2
Use only a DOT 3 approved brake fluid in your vehicle. Always use fresh fluid when servicing or refilling the brake system.
The fluid level in both reservoirs of the master cylinder should be maintained at the bottom of the fill split rings visible after removing the covers. Add the necessary fluid to maintain a proper level. A drop in the fluid level should be expected as the brake pads and shoes wear. However, if an unusual amount of fluid is required, check for system leaks.