Jeep WK Grand Cherokee Cooling System Maintenance

By Jeep Experts

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You or others might be badly burned by scorching engine coolant/anti-freeze or steam out of your radiator. If you see or hear steam coming from beneath the hood, don’t open the hood till the radiator has had time to chill. Never attempt to open a cooling system strain cap when the radiator or coolant bottle is scorching.

Engine Coolant Checks

Check engine coolant/anti-freeze safety each 12 months (earlier than the onset of freezing climate, the place relevant). If engine coolant/anti-freeze is soiled or rusty in look, the system must be drained, flushed and refilled with recent engine coolant/anti-freeze.

Check the entrance of the radiator for any accumulation of bugs, leaves, and many others. Clean the radiator by gently spraying water from a backyard hose behind the core. Check the engine cooling system hoses for situation and tightness of connection. Inspect the whole system for leaks. Any hoses that present cuts or extreme abrasion have to be changed.

Cooling System – Drain, Flush, And Refill

At the intervals proven within the applicable Maintenance schedules, the system must be drained, flushed, and refilled.

If the answer is soiled and incorporates a substantial quantity of sediment, clear and flush with dependable cooling system cleaner. Follow with a radical rinsing to take away all deposits and chemical compounds.

Engine Coolant Disposal

Used ethylene glycol-based engine coolant/anti-freeze is a regulated substance requiring correct disposal. Check together with your native authorities to find out the disposal guidelines in your neighborhood. Do not retailer ethylene glycolbased engine coolant/anti-freeze in open containers or permit it to stay in puddles on the bottom. Prevent ingestion by animals and kids. If ingested by a toddler, contact a doctor instantly. Clean up any floor spills instantly.

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Selection Of Engine Coolant

Use solely the producer’s really useful engine coolant/anti-freeze, discuss with Recommended Fluids, Lubricants, and Genuine Parts for proper engine coolant/ anti-freeze sort.

Mixing of engine coolants aside from the required HOAT engine coolant/anti-freeze could lead to decreased corrosion safety and engine injury. If a non-HOAT engine coolant/anti-freeze is launched into the cooling system in an emergency, it must be changed with the required engine coolant/antifreeze as quickly as potential.

Do not use plain water alone or alcohol base engine coolant/anti-freeze merchandise. Do not use further rust inhibitors or antirust merchandise, as they might not be appropriate with the engine coolant/anti-freeze and should plug the radiator.

This car has not been designed to be used with Propylene Glycol primarily based engine coolant/anti-freeze. Use of Propylene Glycol base engine coolant/antifreeze isn’t really useful.

Adding Engine Coolant

When including engine coolant/anti-freeze, a minimal resolution of fifty% really useful HOAT ethylene glycol engine coolant/anti-freeze in water must be used. Use increased concentrations (to not exceed 70%) if temperatures beneath -34°F (-37°C) are anticipated. Use solely excessive purity water corresponding to distilled or deionized water when mixing the water/engine coolant (antifreeze) resolution. The use of decrease high quality water will scale back the quantity of corrosion safety within the engine cooling system.

Please be aware that it’s the proprietor’s duty to keep up the correct degree of safety in opposition to freezing based on the temperatures occurring within the space the place the car is operated.

NOTE: Mixing engine coolant sorts will lower the lifetime of the engine coolant/anti-freeze and would require extra frequent engine coolant/anti-freeze modifications.

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Cooling System Pressure Cap

The cap have to be absolutely tightened to stop lack of coolant, and to insure that coolant will return to the radiator from the coolant reserve tank. The cap must be inspected and cleaned if there may be any accumulation of overseas materials on the sealing surfaces.

The warning phrases DO NOT OPEN HOT on the cooling system strain cap are a security precaution. Never add engine coolant/anti-freeze when the engine is overheated. Do not loosen or take away the cap to chill an overheated engine. Heat causes strain to construct up within the cooling system. To forestall scalding or harm, don’t take away the strain cap whereas the system is scorching or beneath strain.

Engine Coolant Level

Check the engine coolant degree at the very least as soon as a month or extra usually in scorching climate. Check the extent when the engine is at regular working temperature. Check the engine coolant degree solely within the coolant restoration bottle. The engine coolant degree have to be between the FULL and the ADD mark on the bottle. See your approved vendor if the engine coolant degree drops shortly.

Points To Remember

NOTE: When the car is stopped after a couple of miles of operation, chances are you’ll observe vapor coming from the entrance of the engine compartment. This is often a results of moisture from rain, snow, or excessive humidity accumulating on the radiator and being vaporized when the thermostat opens, permitting scorching coolant to enter the radiator.

If an examination of your engine compartment exhibits no proof of radiator or hose leaks, the car could also be safely pushed. The vapor will quickly dissipate.

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Do not overfill the coolant bottle.

Check engine coolant/anti-freeze freeze level within the system.

If frequent engine coolant/anti-freeze additions are required, or if the extent within the restoration bottle doesn’t drop when the engine cools, the cooling system must be strain examined for leaks.

Maintain engine coolant/anti-freeze focus at 50%, ethylene glycol engine coolant/anti-freeze (minimal) in water for correct corrosion safety of your engine that incorporates aluminum parts.

Make positive that the radiator and coolant bottle hoses will not be kinked or obstructed.

Do not change the thermostat for summer time or winter operation. If substitute is ever obligatory, set up ONLY the proper sort thermostat. Other designs could lead to unsatisfactory cooling efficiency, poor gasoline mileage, and elevated emissions.

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