Idemitsu ATF Type H-Plus Automatic Transmission Fluid 5QT — Honda/Acura Z-1/DW-1 Compatible, Enhanced Friction & Oxidation Resista

Idemitsu ATF Type H-Plus is a specially formulated automatic transmission fluid designed to meet Honda and Acura specifications, delivering stable viscosity, enhanced clutch performance, and long-lasting protection for transmissions requiring ATF Z-1 or DW-1 compatibility.

Built for Honda and Acura automatic gearboxes, Idemitsu ATF Type H-Plus uses optimized viscosity control and advanced friction modifiers to maintain smooth shifting, reduce wear, and resist oxidation under thermal stress. This 5-quart container gives DIYers and professional shops enough fluid for a service or top-up while providing performance comparable or superior to many OEM alternatives.

How does this ATF improve shifting and drivability?

Idemitsu Type H-Plus balances friction characteristics and viscosity to produce consistent, crisp shifts under varied temperatures. It reduces clutch chatter and helps maintain the transmission’s shift timing across miles.

• Engineered friction modifiers for stable clutch engagement
• Optimized viscosity for consistent hydraulic response
• Suitable for both newer and older Honda/Acura gearboxes

Will this fluid protect the transmission and extend fluid life?

The formula includes anti-wear additives and antioxidants that combat gear and bearing wear while resisting thermal breakdown. That combination helps preserve fluid properties longer than unprotected formulations.

• Advanced anti-wear chemistry to protect gears and bearings
• High oxidation resistance for reduced sludge and varnish
• Thermally stable for longer service intervals when used as directed

Is Idemitsu ATF Type H-Plus compatible with Honda ATF Z-1 or DW-1 requirements?

Yes — it is formulated specifically for vehicles that call for Honda ATF Z-1 or DW-1, making it a drop-in option for many Honda and Acura models. Always check the vehicle’s owner manual for the exact specification and service recommendations.

• Designed to meet Honda/Acura ATF Z-1 and DW-1 specifications
• Recommended for transmissions specifying those fluid types
• Works for both factory-fill and service-fill applications when compatible

How much fluid comes in this package and how is it best used?

This listing contains a 5-quart (5 QT) container, enough for many transmission drains and refills or for topping up during maintenance. Use with proper service procedures: warm the vehicle, follow capacity charts, and dispose of used fluid responsibly.

• 5 QT container suitable for service refill or workshop use
• Use recommended fill and check procedures from the vehicle manufacturer
• Store sealed and upright in a cool, dry place to maintain product quality

Who is this for? Idemitsu ATF Type H-Plus is aimed at Honda and Acura owners, independent mechanics, and fleet managers who need a reliable, specification-matching automatic transmission fluid. If your vehicle specifies ATF Z-1 or DW-1, or you want a high-stability, anti-wear fluid for routine transmission service, this 5-quart option provides professional-grade protection and performance without relying solely on dealer-only fluids.