To remove rain water that's seeped into the system
							                                
                                        
                                    
							                        
                    
                            To remove any oil leaks that collect here
							                                
                                        
                                    
							                        
                    
                            To remove moisture drawn in from the atmosphere
							                                
                                        
                                    
							                        
                    
                            To remove excess coolant
							                                
                                        
                                    
							                        
                     
	 
	