See also:

Cooling System – Drain, Flush, And Refill
If the engine coolant (antifreeze) is dirty and contains a considerable amount of sediment, clean and flush with reliable cooling system cleaner. Follow with a thorough rinsing to remove all dep ...

Protection
For appearance purposes, you may wish to protect the acrylic (cloth) top periodically. Afabric protectant such as Scotchguard is suggested. The top should be clean and dry before application of ...

Engine Coolant Checks
Check the engine coolant (antifreeze) protection every 12 months (before the onset of freezing weather, where applicable). If the engine coolant (antifreeze) is dirty or rusty in appearance, the ...