Recommended Engine Coolant

Avoid damage! Using incorrect coolant mixture overheats and damages the radiator and engine:

• Do not operate engine with plain water.
• Do not exceed a 50% mixture of coolant and water.
• Aluminum engine blocks and radiators require approved ethylene glycol-based coolant.

The engine cooling system is filled to provide year-round protection against corrosion and cylinder liner pitting. Winter freeze protection is to -37 degrees C (-34 degrees F). If protection at lower temperatures is required, consult your John Deere dealer for recommendations.

The following coolants are preferred:

• John Deere Cool-Gard™ II Premix
• John Deere Cool-Gard™ Premix
• John Deere Cool-Gard™ PG Premix

John Deere Cool-Gard™ II Premix and John Deere Cool-Gard™ Premix are available in a concentration of 50% propylene glycol.

John Deere Cool-Gard™ PG Premix is available in a concentration of 55% propylene glycol.

Additional recommended coolants:

• John Deere Cool-Gard™ II Concentrate in a 40% to 60% mixture of concentrate with water.
• John Deere Cool-Gard™ Concentrate in a 40% to 60% mixture of concentrate with water.

If the recommended coolants are unavailable, use an ethylene glycol or propylene glycol base coolant that meets the following specification:

• ASTM D3306 prediluted (50%) coolant.
• ASTM D3306 coolant concentrates in a 40% to 60% mixture of concentrate with water.

Check container label before using to be sure that it has the appropriate specifications for your machine. Use coolant with conditioner or add conditioner to coolant before using.

Water Quality

• Water quality is important to the performance of the cooling system. Distilled, deionized, or demineralized water is recommended with ethylene glycol base engine coolant concentrate.