Purpose and Specifications

Castrol Transmax ATF Dex/Merc Multivehicle 15F139 is a semi-synthetic automatic transmission fluid in a 1-liter bottle, designed for smooth shifting and long-lasting protection in a wide range of vehicles. It meets Dexron-IIIH and Mercon standards, plus Toyota T-III/T-IV/WS, Mitsubishi SP-II/SP-III, and many Japanese, GM, Ford, and European specs for 4-5 speed automatics.

This fluid delivers enhanced friction durability to keep shifts buttery smooth, exceptional high-temperature protection up to 150°C to prevent oxidation and deposits, and superb low-temperature flow down to -40°C for easy cold starts. Ideal for cars, light trucks, and SUVs from 1969-2026 with matching transmission requirements.

When to Use / Replace?

Use Castrol 15F139 in automatic transmissions needing Dexron III, Mercon, or listed Japanese specs to avoid jerky shifts or overheating. Replace every 50,000-80,000 km or 3-4 years, or sooner if towing heavy loads or in extreme heat/cold. Shelf life is 5 years unopened in cool, dry storage.

• Perfect for older GM, Ford, Toyota, Mitsubishi, Nissan, Honda, and Hyundai vehicles.
• Prevents wear, stops leaks with seal conditioners, and resists sludge buildup.
• Multi-vehicle formula saves time and money on matching exact specs.

FAQ

Q: Is this safe for my Toyota Camry?
A: Yes, it meets Toyota T-III, T-IV, and WS specs for smooth performance in most models.

Q: How often should I change it?
A: Every 50,000-80,000 km or 3-4 years under normal driving; check your owner's manual.

Q: Can it handle hot climates?
A: Absolutely, provides protection up to 150°C to fight heat damage and extend transmission life.