--- product_id: 271969366 title: "ATF Type HP Automatic Transmission Fluid for Subaru - 1QT, Red, (30040099-75000C020)" brand: "idemitsu" price: "£37.02" currency: GBP in_stock: true reviews_count: 5 category: "Idemitsu" url: https://www.desertcart.co.uk/products/271969366-atf-type-hp-automatic-transmission-fluid-for-subaru-1qt-red store_origin: GB region: United Kingdom --- # High 174°C flash point Precision friction control Advanced anti-wear tech ATF Type HP Automatic Transmission Fluid for Subaru - 1QT, Red, (30040099-75000C020) **Brand:** idemitsu **Price:** £37.02 **Availability:** ✅ In Stock ## Summary > 🚗 Shift Smooth, Drive Confident: The Ultimate ATF for Subaru Enthusiasts ## Quick Answers - **What is this?** ATF Type HP Automatic Transmission Fluid for Subaru - 1QT, Red, (30040099-75000C020) by idemitsu - **How much does it cost?** £37.02 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/271969366-atf-type-hp-automatic-transmission-fluid-for-subaru-1qt-red) ## Best For - idemitsu enthusiasts ## Why This Product - Trusted idemitsu brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Lasting Fluid Life:** Outstanding oxidation and thermal resistance extend fluid durability, saving you time and money on maintenance. - • **Spotless Transmission Health:** Superior cleanliness formula keeps your transmission free from sludge and varnish buildup for peak performance. - • **Seamless Shifts, Zero Shudders:** Engineered frictional properties ensure buttery smooth gear changes and eliminate annoying shuddering. - • **Leak-Resistant Seal Conditioning:** Optimized seal compatibility prevents leaks by reducing shrinkage, hardening, and cracking of seals. - • **Maximum Gear & Bearing Protection:** Cutting-edge anti-wear technology guards critical components against wear and tear under all driving conditions. ## Overview Idemitsu ATF Type HP is a premium automatic transmission fluid specifically formulated for Subaru vehicles with conventional transmissions up to 2005. It delivers precise frictional control for smooth shifting, exceptional anti-wear protection, and superior resistance to oxidation and thermal breakdown. Trusted by OEMs and backed by advanced seal conditioning technology, this 1-quart fluid keeps your transmission clean, leak-free, and performing at its best under demanding conditions. ## Description IDEMITSU ATF Type - HPFormulated to meet the specific requirements of Subaru vehicles equipped with conventional (non-CVT) transmissions up to model year 2005Recommended for service-fill in all Subaru automatic transmissions where SUBARU ATF HP is specifiedFuel economy demands and more sophisticated electronic controls have made automatic transmissions not only more complex, but also unique to each vehicle manufacturer. Long gone are the days of having just a couple choices of automatic transmission fluid type. Idemitsu is the factory fill Automatic Transmission Fluid (ATF) supplier to most Asian imports. Idemitsu application-specific ATF products match the exact friction materials and performance requirements of each different vehicle model for which they are made. Review: Looks good. - Looks good. Review: As good as OE for less $$ - A much more cost effective ATF for Subaru owners. Same as OE Subaru as far as I understand... ## Features - Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance - Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection - Provides superior cleanliness, maintaining the transmission free of sludge and varnish deposits - Advanced anti-wear technology provides maximum protection to gears and bearings - Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking.Flash point: 174.0 degrees_celsius ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B071X4DVRM | | Best Sellers Rank | #98,132 in Automotive ( See Top 100 in Automotive ) #123 in Automotive Transmission Fluids | | Brand | Idemitsu | | Brand Name | Idemitsu | | Container Type | Can | | Customer Reviews | 4.7 out of 5 stars 166 Reviews | | Flash Point | 174 Degrees Celsius | | Global Trade Identification Number | 00852967006096 | | Included Components | Quart of Idemitsu ATF Type HP | | Item Form | Liquid | | Item Type Name | ATF Type HP Automatic Transmission Fluid (1 quart) | | Liquid Volume | 32 Fluid Ounces | | Liquid volume | 32 Fluid Ounces | | Manufacturer | Idemitsu | | Material | Polytetrafluoroethylene (PTFE) | | Model Number | 30040099-75000C020 | | Number of Items | 1 | | Package information | Can | | Part Number | 30040099-75000C020 | | Recommended Uses For Product | Transmission Fluid | | Recommended uses for product | Transmission Fluid | | SAE J300 Viscosity Grade | 5W-20 | | Specific Uses For Product | Automatic Transmission Lubrication and Maintenance for Subaru Vehicles with HP Specifications | | UPC | 852967006096 852967006539 | | Unit Count | 32.0 Fluid Ounces | | Upper Temperature Rating | 174 Degrees Celsius | | Upper temperature rating | 174 Degrees Celsius | ## Product Details - **Brand:** Idemitsu - **Liquid volume:** 32 Fluid Ounces - **Material:** Polytetrafluoroethylene (PTFE) - **Package information:** Can - **Recommended uses for product:** Transmission Fluid ## Images ![ATF Type HP Automatic Transmission Fluid for Subaru - 1QT, Red, (30040099-75000C020) - Image 1](https://m.media-amazon.com/images/I/71O0kWeO3QL.jpg) ## Questions & Answers **Q: How can i be sure this is the authentic idemitsu brand and not fake, and, this meets the specs for a 2011 subaru outback 3.6r?** A: (I'm thinking the 3.6R got the old school 5EAT and not the newer CVT.) The shipment I received appeared to be genuine, equivalent to Subaru ATF-HP. If it was counterfeit, they did an extremely good job copying the bottle and the label; and what would they have put in the bottle that would have been significantly cheaper than ATF-HP but not as good? Bottom line, I don't know how you would tell if the product you received was counterfeit. **Q: What color is good on the stick after 150,000?** A: New, out of the bottle fluid is red. If you haven't changed it in 150,000 miles I would bet it is dark brown and more viscous. Red is best. For a quick solution, with the motor off you can siphon most of the fluid out of the holding tank and replace it with this fluid. After a week you can do it again and you should be good. **Q: Is this good for 2008 Subaru Outback automatic transaxle (2.5i 4-cylinder engine)?** A: This is the fluid that Subaru specifies. See page 11-24 of your owners manual for more information on recommended fluids and capacity for your automatic transmission. I use this ATF in my 2008 Subaru Outback 2.5i. **Q: Anyone know if I can put Idemitsu hp in my 05 3.0 outback that already has subaru hp fluid in it? I've been told yes, just need to add a qt or 2** A: My understanding is yes. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Looks good. *by V***V on 21 December 2022* Looks good. ### ⭐⭐⭐⭐⭐ As good as OE for less $$ *by M***F on 22 June 2020* A much more cost effective ATF for Subaru owners. Same as OE Subaru as far as I understand... ### ⭐⭐⭐⭐⭐ Idemitsu ATF Type HP *by A***N on 17 April 2026* I used this fluid for a transmission service where the vehicle called for Type HP fluid. Shifting felt smooth afterward and I did not notice any leaks or issues. The fluid looked clean and poured easily. It is also significantly less expensive than buying OEM fluid directly from the dealer. ## Frequently Bought Together - Idemitsu ATF Type HP Automatic Transmission Fluid for Subaru - 1QT, Red, (30040099-75000C020) - Subaru Genuine Super Coolant Blue Prediluted SOA868V9272 1 Gallon Pre Mixed 50/50 2009 and Newer Ascent BRZ Crosstrek Forester Impreza Legacy Outback WRX - Subaru SOA868V9220 Brake Fluid - 12 fl.oz --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/271969366-atf-type-hp-automatic-transmission-fluid-for-subaru-1qt-red](https://www.desertcart.co.uk/products/271969366-atf-type-hp-automatic-transmission-fluid-for-subaru-1qt-red) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-01*