An oil quality sensor apparatus includes a housing that includes an oil flow path through which oil flows through the housing. The system further includes an actuator motor operatively connected to the actuator block for rotating a link. The performance indicator is then monitored, and the network performance rule is evaluated on a regular basis based on the performance indicator. The social media system may provide access to multiple groups or sub social networks based on match between profile data such as an email address domain name and an access control list. A second fastener is configured for mounting to the graft and the first bone to anchor the graft to the first bone. At least one pair of the pair of front legs and the pair of rear legs are inclined such that a space between the front legs or the rear legs in a width direction of the stroller increases as the legs extend downward.