Idemitsu ATF Type TLS (T‑IV) Automatic Transmission Fluid — 5 Quart, anti‑wear & shudder‑reducing

Idemitsu ATF Type TLS (T‑IV) is a fully formulated automatic transmission fluid designed to deliver smooth, consistent gear changes while protecting transmission components and seals over extended service intervals.

Engineered to meet the performance requirements of vehicles that specify Type TLS (T‑IV) fluids, this 5‑quart pack from Idemitsu combines frictional control, oxidation resistance and anti‑wear chemistry to keep transmissions operating cleanly and reliably. The formula focuses on preventing shudder, minimizing sludge and varnish buildup, and preserving seal elasticity — all factors that extend component life and maintain drivability.

How does this fluid improve shifting feel and reduce shudder?

Idemitsu tuned the frictional properties of this ATF to stabilize clutch engagement and torque converter behavior across temperature ranges. That balanced friction profile helps prevent judder and ensures predictable, crisp shifts whether the transmission is cold or at operating temperature.

• Precisely engineered friction modifiers for smooth clutch engagement
• Stable performance across low and high temperatures
• Reduces torque converter shudder under load

What protection does it provide for gears, bearings and seals?

The fluid includes modern anti‑wear additives that form protective films on metal surfaces to limit metal‑to‑metal contact and wear. It also contains conditioning agents that maintain seal pliability to reduce leaks caused by shrinkage or hardening.

• Advanced anti‑wear technology protects gears and bearings
• Seal compatibility additives reduce leak risk from aging seals
• Conditioners preserve seal elasticity and resilience

Will this ATF keep my transmission clean and long‑lasting?

Yes — the formulation resists oxidation and thermal breakdown that produce sludge and varnish. By maintaining chemical stability at high operating temperatures, the fluid helps extend service intervals and preserve internal cleanliness for consistent performance.

• Excellent oxidation resistance for long fluid life
• Minimizes sludge and varnish buildup on components
• Maintains performance over extended drain intervals

Is Idemitsu ATF Type TLS suitable for leak‑prone or high‑mileage transmissions?

The fluid’s seal conditioning and compatibility make it a good choice for older units where seal shrinkage or hardening is a concern. Its anti‑wear and cleaning properties also help protect transmissions that have accumulated miles, supporting continued reliable operation.

• Seal conditioning reduces leaks in older transmissions
• Anti‑wear agents help protect high‑mileage components
• Cleaning action reduces deposit‑related performance issues

Who is this for: Idemitsu ATF Type TLS (T‑IV) 5 Quart is intended for owners, fleet managers and technicians who require a Type TLS automatic transmission fluid that balances smooth shifting, component protection and long fluid life. Choose this product when your vehicle manufacturer calls for T‑IV/TLS specification or when you want a well‑rounded ATF that addresses shudder control, wear protection and seal health without frequent replacements.

Key specifications:

• Pack size: 5 quarts
• Flash point: 174.0 °C
• Designed for systems specifying Type TLS (T‑IV) fluids

Typical benefits:

• Smoother, consistent shifts and reduced shudder
• Extended protection against oxidation and thermal breakdown
• Improved cleanliness, minimizing sludge and varnish
• Enhanced anti‑wear protection for gears and bearings
• Seal compatibility to reduce leaks and maintain pressure