2009 Jeep Grand Cherokee Owner Manual SRT8 - Page 368

366 MAINTAINING YOUR VEHICLE • Do not overfill the coolant recovery bottle. • Check engine coolant (antifreeze) freeze point in the radiator and in the coolant recovery bottle. If engine coolant (antifreeze) needs to be added, contents of coolant recovery bottle must also be protected against freezing. • If frequent engine coolant (antifreeze) additions are required, or if the level in the coolant recovery bottle does not drop when the engine cools, the cooling system should be pressure tested for leaks. • Maintain engine coolant (antifreeze) concentration at 50% HOAT engine coolant (antifreeze) (minimum) and distilled water for proper corrosion protection of your engine which contains aluminum components. • Make sure that the radiator and coolant recovery bottle overflow hoses are not kinked or obstructed. • Keep the front of the radiator clean. If your vehicle is equipped with air conditioning, keep the front of the condenser clean. • Do not change the thermostat for Summer or Winter operation. If replacement is ever necessary, install only the correct type thermostat. Other designs may result in unsatisfactory coolant performance, poor gas mileage, and increased emissions. Brake System Brake Master Cylinder The fluid level in the master cylinder should be checked whenever the vehicle is serviced, or immediately if the brake system warning light is on. If necessary, add fluid to bring level to the full mark on the side of the reservoir of the brake master cylinder. Be sure to clean the top of the master cylinder area before removing the cap. With disc brakes, fluid level can be expected to fall as the brake