Idemitsu ATF Type H-Plus Automatic Transmission Fluid 1QT — Synthetic-Blend, Low-Temp Flow

This one-quart bottle of Idemitsu ATF Type H-Plus is designed for automatic transmissions that require modern friction control, thermal stability, and protection against deposits. It balances fuel-economy benefits with robust anti-wear chemistry so transmissions shift smoothly while staying clean and protected under varied operating conditions.

How does Idemitsu ATF Type H-Plus improve shifting performance?

Idemitsu's formulation controls friction precisely to ensure consistent clutch engagement and quick, smooth gear changes. The fluid's engineered frictional characteristics minimize shudder and hesitation, improving drivability in stop-and-go or highway conditions.

• Stable friction coefficients for predictable engagement
• Reduced shudder during torque converter lock-up
• Consistent performance across temperature ranges

Will this fluid protect my transmission components over time?

Yes—advanced anti-wear additives help protect gears, clutch packs, and bearings from metal-to-metal contact and wear. Additionally, the fluid resists oxidation and thermal breakdown, extending service life and maintaining protective properties over longer drain intervals.

• Anti-wear chemistry to reduce component wear
• High oxidation resistance for longer fluid life
• Thermal stability to maintain protective film at elevated temperatures

Is Idemitsu ATF Type H-Plus effective in cold weather starts?

Idemitsu engineered the fluid for excellent low-temperature flow, so it circulates quickly at startup and reduces delay in hydraulic response. Faster flow at low temperatures helps ensure smooth initial shifts and minimizes early wear caused by delayed lubrication.

• Enhanced low-temperature viscosity for quick cold flow
• Improved hydraulic response during cold starts
• Reduced wear from faster initial circulation

How does it keep the transmission clean?

The fluid contains detergents and dispersants that limit sludge and varnish buildup, helping valves and solenoids operate freely and reducing maintenance needs. Cleaner internals contribute to more consistent shift quality and longer transmission component life.

• Detergent action prevents deposit formation
• Maintains valve and passage cleanliness
• Reduces risk of sludge-related shifting issues

Who is this for? Idemitsu ATF Type H-Plus in the 1QT size is ideal for DIY mechanics, professional technicians, and vehicle owners who need a reliable automatic transmission fluid that balances smooth shift performance, protection, and long fluid life. Choose this product if your transmission calls for a modern ATF with improved low-temperature flow, good fuel-economy properties, and robust anti-wear protection. Always consult your vehicle's owner manual or service guide to confirm compatibility before use.