Carry out every task and check listed previously. The brake shoes and pads (disc brakes only) have to be checked for wear. Even if the car has passed the MOT braking test, this gives no indication of brake wear, only of braking efficiency. In the case of drum brakes, rather than peer through the hole in the backplate, remove the drum to permit a more thorough inspection. The brake drums should be cleaned. (See Chapter Four for more details of these operations.) Renew the sparking plugs and points. Renew the engine breather filter. Every eighteen months renew the brake hydraulic fluid (see Chapter Four). Every three years renew the brake hydraulic seals.