Owner's Manual
Page 388
... system should be sure hoses do not come in contact with any heat source or moving component which may result in unsatisfactory coolant performance, poor gas mileage, and increased emissions. Hard or soft spots, brittle rubber, cracking, tears, cuts, abrasions, and excessive swelling indicate deterioration of heat and mechanical damage. Inspect hose...
... system should be sure hoses do not come in contact with any heat source or moving component which may result in unsatisfactory coolant performance, poor gas mileage, and increased emissions. Hard or soft spots, brittle rubber, cracking, tears, cuts, abrasions, and excessive swelling indicate deterioration of heat and mechanical damage. Inspect hose...