Purpose and Specifications

Castrol 1599DC Transmax High Mileage Transmission Fluid is a premium automatic transmission fluid (ATF) designed for vehicles with over 75,000 miles (120,000 km). It restores smooth shifting, stops leaks with special seal conditioners, and cleans away sludge and varnish buildup for reliable performance.

• Prevents and stops fluid leaks to keep your transmission sealed tight
• Extra cleaners reduce deposits that cause rough shifts
• Protects clutches from wear for longer transmission life
• Works in a wide range of vehicles needing DEXRON-IIIH, MERCON, or JASO-1A specs
• Handles operating temperatures from -40°C to 200°C for everyday driving and towing

Ideal for high-mileage cars, trucks, and SUVs - typically replace every 50,000-100,000 km (30,000-60,000 miles) or 3-5 years, check your owner's manual. Shelf life is 5 years unopened.

When to Use / Replace?

Use Castrol 1599DC if your transmission has over 75,000 miles and shows slipping gears, rough shifts, or leaks. Perfect for older GM, Ford, and import vehicles. Replace during routine service to avoid costly repairs - fresh fluid ensures smooth acceleration and prevents overheating.

Pro Tip: Drain and refill at 80,000-120,000 km intervals for maximum protection in stop-and-go traffic or heavy loads.

FAQ

Q: Is this safe for my high-mileage automatic transmission?
A: Yes, specially formulated for transmissions over 75,000 miles to fix leaks, clean internals, and restore smooth shifts.

Q: How often should I change it?
A: Every 50,000-100,000 km or 3-5 years - follow your vehicle manual for exact intervals.

Q: Will it work in my Ford or GM vehicle?
A: Yes, meets DEXRON-IIIH and MERCON specs for broad compatibility.