Idemitsu ATF Type HK Automatic Transmission Fluid 5-Quart — Hyundai/Kia SP-III, smooth shifting

Idemitsu ATF Type HK is a 5-quart automatic transmission fluid formulated to meet Hyundai/Kia SP-III specifications for smooth shifting and long-term transmission stability.

This 5-quart container (part number 30040097-95300C020) supplies the specialized ATF Type HK blend designed for automatic transmissions in many Hyundai and Kia models. It balances friction characteristics, oxidation resistance, and seal compatibility so transmissions operate consistently in city and highway conditions. The formula is engineered to reduce varnish and sludge buildup while supporting gear and bearing protection across typical driving temperatures.

Which vehicles require Idemitsu ATF Type HK?

Idemitsu ATF Type HK is intended for Hyundai and Kia vehicles that specify SP-III or equivalent ATF Type HK in their owner’s manual. Always cross-check your vehicle’s fluid specification and capacity before purchase to ensure compatibility.

• Designed to meet Hyundai/Kia SP-III requirements
• Suitable for models listing ATF Type HK in maintenance documentation
• Available in a practical 5-quart container for service or top-ups

How does this fluid improve shifting and transmission longevity?

The formulation manages friction and thermal stability so shift quality stays consistent as temperatures change. It resists oxidation and deterioration, which helps prevent deposits that can impair valve bodies and clutches over time.

• Engineered friction modifiers for smoother, consistent shifts
• Oxidation-resistant base for reduced sludge and varnish
• Seal-friendly additives to limit leaks and preserve components

What are the maintenance benefits and service uses of a 5-quart pack?

A 5-quart container is convenient for a full fluid change on many vehicles or for multiple top-ups during routine maintenance. It offers enough volume for a drain-and-fill service on many transmissions or for keeping a spare on hand for periodic checks.

• Quantity suited for common drain-and-fill procedures
• Handy for workshops and DIY owners performing scheduled service
• Reduces trips for buying single small bottles during maintenance

Are there precautions or best practices when using this ATF?

Use only when the vehicle manufacturer lists ATF Type HK or SP-III specification. Follow the vehicle’s recommended service intervals and dispose of used fluid appropriately. Mixing with a different ATF type can affect performance and is not recommended.

• Confirm manufacturer specification before use
• Perform fluid replacement per service manual guidance
• Avoid mixing with other ATF types unless explicitly permitted

Who is this for? This Idemitsu ATF Type HK 5-quart container is aimed at Hyundai and Kia owners, independent mechanics, and fleet technicians who need a specification-matched automatic transmission fluid for routine service or repairs. It’s suited to anyone looking for a multi-quart supply that supports consistent shift feel, helps minimize deposit formation, and preserves seals and internal components when used according to manufacturer guidelines.