Automotive manufacturers provide a maintenance schedule for hoses and other car parts in the vehicle's owner's manual. In general, it is recommended that hoses be inspected every 30,000 miles and replaced every 60,000.
Automotive hoses can be inspected at any time when the engine is cool. Any hose that is showing cracks or bulges should be replaced. Hoses can also be felt for an even firmness through its length. Soft or hard spots in the hose can be a sign that it needs to be replaced.
Automotive hoses should be inspected and replaced per manufacturer recommendation to help assure proper performance and to avoid breakdowns. Hoses are generally inexpensive to buy, as well as being quick and easy to replace.
