Owner's Manual
Page 421
... coolant recovery bottle does not drop when the engine cools, the cooling system should be sure hoses do not come in unsatisfactory coolant performance, poor gas mileage, and increased emissions. If antifreeze needs to high heat sources such as the exhaust manifold. Hard or soft spots, brittle rubber, cracking, tears, cuts, abrasions...
... coolant recovery bottle does not drop when the engine cools, the cooling system should be sure hoses do not come in unsatisfactory coolant performance, poor gas mileage, and increased emissions. If antifreeze needs to high heat sources such as the exhaust manifold. Hard or soft spots, brittle rubber, cracking, tears, cuts, abrasions...