More than 2,300 volunteers are donating about 10,000 hours of their time to help people in need. It's part of a week-long event called, "The Big Serve." The event involves 158 projects stretched over eight days. Today, Thursday, October 11, single moms are invited to stop by the Express Oil Change Service Center located at 900 S. Main Street Kernersville from 4:00 to 7:00 p.m. Single mothers will receive a free oil change and other free car services like windshield wiper-blade replacements. Organizers estimate they will work on four cars every six minutes. Last year, the event helped 135 single mothers.