Cooling System – Drain, Flush, And Refill
Jeep Wrangler / Jeep Wrangler Owner's Manual / Maintaining Your Vehicle / Maintenance Procedures / Cooling System / 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 deposits and chemicals. Properly dispose of the old engine coolant (antifreeze).
Refer to the “Maintenance Schedule” for the proper maintenance intervals.
See also:
HSA Activation Criteria
The following criteria must be met in order for HSA to
activate:
• Vehicle must be stopped.
• Vehicle must be on a 6% (approximate) grade or
greater hill.
• Gear selection matches vehicle ...
Fluid Level Check
The fluid level should be to the bottom edge of the fill hole (A) when the vehicle
is in a level position.
...


