The newest fire engine in the City of Manteca’s fleet and a 1998 Buick Park Avenue met each other in a slow speed head-on collision at 3:30 p.m. Tuesday on West Yosemite Avenue injuring the sedan’s two front seat occupants along with a back seat passenger and three firefighters.Three women from the Buick were taken to area hospitals in two separate ambulances. Two of the three shaken firefighters were checked out for complaints of pain.Fire Chief Kirk Waters said his Engine Company 244 was assigned to the new Del Webb station on Lathrop Road. It was en route with a crew of three to pick up needed equipment from another station when the crash occurred just east of Union Road.Manteca Police spokesman, Traffic Sergeant Paul Carmona, said it was believed the westbound Buick drifted over the center line for an unknown reason into the path of the fire engine.