
Before discussing the specific type of coolant used in the Ford Explorer, it's important to understand what coolant does. Engine coolant, often known as antifreeze, is a critical component that helps maintain your engine's temperature. It prevents the engine from overheating in extreme conditions and also ensures it doesn't freeze up in cold climates. The right coolant is essential for optimal engine performance and durability.
For the Ford Explorer with a 3.5L Duratec engine, the recommended coolant is the Motorcraft® Orange Antifreeze/Coolant Prediluted (Specification: VC-3DIL-B, WSS-M97B44-D2). This specification is consistent across the United States, Canada, and Mexico. It's crucial to use the specified coolant to ensure the vehicle operates as designed.

The capacity of the engine coolant varies slightly depending on whether your Ford Explorer is equipped with the trailer tow option or not. Without the trailer tow, the coolant capacity is 13.1 qt (12.4 L), and with the trailer tow, it's slightly higher at 13.4 qt (12.7 L). It's always advisable to check and maintain the coolant level between the MIN and MAX marks on the reservoir.
Motorcraft® coolants are recommended for Ford vehicles because they are formulated to work perfectly with the engine materials and components. They provide the right balance of corrosion protection and heat transfer properties. Using a non-recommended coolant can lead to component damage, reduced engine performance, and even void your vehicle warranty.
Using fluids and oils that meet the defined specifications is crucial. Inappropriate fluids can lead to increased emissions, reduced fuel economy, degraded brake performance, and longer engine cranking periods. In the worst-case scenario, it can lead to significant engine damage not covered under warranty.
While adding or changing coolant might seem like a straightforward task, it's essential to remember that the air conditioning refrigerant system operates under high pressure. Only qualified personnel should service this system to avoid the risk of personal injury.
| Fluid Type | Capacity/Specification | Notes |
|---|---|---|
| Engine Oil | 6.0 qt (5.7 L) | Motorcraft® SAE 5W-20 recommended |
| Engine Coolant (without trailer tow) | 13.1 qt (12.4 L) | Motorcraft® Orange Antifreeze/Coolant Prediluted |
| Engine Coolant (with trailer tow) | 13.4 qt (12.7 L) | Motorcraft® Orange Antifreeze/Coolant Prediluted |
| Brake Fluid | Between MIN/MAX on brake fluid reservoir | Motorcraft® DOT 4 LV High Performance Motor Vehicle Brake Fluid |
| Rear Axle Fluid (4WD) | 2.4 pt (1.15 L) | Motorcraft® SAE 80W-90 Premium Rear Axle Lubricant |
| Automatic Transmission Fluid (6F50) | 10.9 qt (10.3 L) | Motorcraft® MERCON LV Automatic Transmission Fluid |
| Automatic Transmission Fluid (6F55) | 11.6 qt (11 L) | Motorcraft® MERCON LV Automatic Transmission Fluid |
| Power Transfer Unit (PTU) Fluid (4WD) | 17.9 fl oz (0.53 L) | Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant |
| Windshield Washer Fluid | Fill as required | Motorcraft® Premium Windshield Wash Concentrate with Bitterant |
| Fuel Tank | 18.6 gal (70.4 L) | - |
| A/C Refrigerant (FWD) | 2.56 lb (1.16 kg) | Motorcraft® R-134a Refrigerant |
| A/C Refrigerant (4WD) | 2.38 lb (1.08 kg) | Motorcraft® R-134a Refrigerant |
| A/C Refrigerant Compressor Oil (FWD) | 6.6 fl oz (195 ml) | Motorcraft® PAG Refrigerant Compressor Oil |
| A/C Refrigerant Compressor Oil (4WD) | 7.3 fl oz (215 ml) | Motorcraft® PAG Refrigerant Compressor Oil |
In summary, for a Ford Explorer with a 3.5L Duratec engine, using the Motorcraft® Orange Antifreeze/Coolant Prediluted is vital for maintaining engine health and performance. Adhering to the recommended specifications for all vehicle fluids, not just the coolant, ensures your Explorer runs smoothly and reliably. As a car enthusiast and writer, I find these details not just technically intriguing but also crucial for any Ford Explorer owner to understand and follow.
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