One problem related to brake fluid leak has been reported for the 1996 Oldsmobile 88. The most recently reported issues are listed below.
Brake line under drivers door sill leaks brake fluid. The brake line is rusted out. Fluid level in brake fluid reservoir low and instrument panel warning light illuminated. Brake pedal goes to floor. Added brake fluid to reservoir. Drove to dealership for repair. All of the brake lines were replaced by the dealer. Original brake lines are not galvenized, are exposed to salt and moisture, and are not painted so they rust!.