What is the best practice for maintaining windshield washing fluid in a vehicle?

• Use any fluid that's available, no matter what type it is.
• Always ensure the vehicle is filled with the correct type of windshield washing fluid.
  Explanation:

  "Always make sure the vehicle has the proper type of windshield washing fluid"
• Use water as a substitute if the proper windshield washing fluid is not available.
• Check that the vehicle has enough fuel before checking the windshield washing fluid level.