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There is no single fluid answer for every Subaru TR690. Subaru specifies different CVT fluids for different TR690 applications, so match the vehicle’s model year and engine to its current service information before buying fluid or servicing the transmission. Subaru calls the unit Lineartronic CVT Generation 1; service information may also call it TR690.
What does TR690 mean?
TR690 is a Subaru transmission-family designation, not a complete vehicle-fitment or fluid specification. Subaru’s June 2014 2015 Legacy and Outback New Technology Training describes the transmission as Lineartronic CVT Generation 1 and says service information may refer to it as TR690. The same reference describes a continuously variable transmission with automatic, manual, and temporary-manual operating modes.
That June 2014 reference gives an automatic-mode ratio range of 2.37:1 to 0.39:1. Treat that as a dated, generation-specific technical description, not a specification guaranteed for every later TR690 application.
Which fluid does a Subaru TR690 use?
It depends on the exact application. Subaru’s 2025 revision of bulletin 01-167-08R lists High Torque CVTF for specified older high-torque applications, but CVTF LV for the Ascent and 2020 Legacy/Outback 2.4L turbo TR690 applications. The designation alone is not enough to select fluid.
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- 6 Quarts of genuine Subaru CVTF-II fluid
- SOA427V1660 x6 This is green fluid
- 2013-2019 Crosstrek with CVT NON HYBRID, 2014-2016 Crosstrek CVT HYBRID
- 2014-2023 Forester 2.5 Naturally Aspirated with CVT NON TURBO (NOT FOR WILDERNESS)
- 2010-2019 Legacy 2.5 FB25 with CVT, 2010-2014 Legacy 3.6 with CVT, 2010-2019 Outback 2.5 FB25 with CVT, 2010-2014 Outback 3.6 with CVT, 2012-2023 Impreza 2.0 non turbo with CVT
| Documented application | Subaru-listed fluid | Source and qualification |
|---|---|---|
| 2014-and-later Forester Turbo | High Torque CVTF (orange) | Subaru bulletin 01-167-08R, revised 2015-11-11; item number SOA748V0200. |
| 2015-and-later Legacy/Outback H-6 and WRX TR690 applications | High Torque CVTF (orange) | Subaru bulletin 01-167-08R, revised 2015-11-11; item number SOA748V0200. |
| Ascent TR690 applications | CVTF LV | Subaru bulletin 01-167-08R, revised 2025-03-17. |
| 2020 Legacy/Outback 2.4L turbo TR690 applications | CVTF LV | Subaru bulletin 01-167-08R, revised 2025-03-17. |
These are examples in Subaru’s cited materials, not a complete worldwide fitment list. Check the applicable service information for the vehicle’s model year, engine, market, and VIN before service or purchase. Subaru’s 2014 reference warns not to mix orange High Torque CVTF with other varieties; do not use that fluid, or CVTF LV, as a universal substitute.
How should fluid level be checked?
Subaru’s June 2014 training reference describes checking CVT fluid level at 30–40°C (86–104°F), with the engine idling after moving the selector through specified positions. Temperature and operating conditions matter for this procedure; it should not be treated as a general fill or check instruction for every TR690.
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- 6 Quarts OF Genuine Subaru CVTF-III / CVT 3 Fluid
- SOA427V2610 X 6 THIS IS Blue / Opaque Fluid
- 2020-2026 Crosstrek with CVT Non Hybrid
- 2022-2026 Forester Wilderness
- 2024-2026 Forester All Non-Hybrid Models
The booklet expressly cautions: “THE TRB IS NOT INTENDED TO BE USED AS A SUPPLEMENT OR SUBSTITUTE FOR THE SERVICE MANUAL.” Use the service manual that applies to the specific vehicle. If you are not equipped to follow its procedure safely and accurately, have a qualified technician perform the check.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What does Subaru document about TR690 fluid seepage?
Subaru bulletin 16-103-16R, revised 2019-01-08, addresses a small number of customer concerns involving fluid seepage on listed TR690-equipped vehicles. It directs technicians to confirm that the leaking fluid is CVT fluid rather than engine oil, then inspect the oil-pump chain cover; the bulletin identifies its sealant as a likely source and describes cleaning, inspection, and resealing as applicable.
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- [Fine Tune Your Vehicle]: Automatic and manual transmission fluid provides hydraulic pressure, lubrication, and friction to your vehicle’s engine; Use the Idemitsu CVT Type SB2 CVT Transmission Fluids 5 Quart Bottle to top off your vehicle and keep you on the road longer
- [Smoother Shifting]: Continuously variable transmission oil will help your gears shift properly to prevent hard or jerky shifting; Designed with frictional properties for superior performance and high torque
- [Extend Engine Life]: Precisely engineered transmission CVT fluid resists buildup; Anti-wear technology protects your belts, gears, and pullies, while high viscosity properties withstand intense temperatures
- [For Your Vehicle]: SB2 CVT fluid is compatible with Subaru TR580 transmissions; Refer to owner manual specifics to ensure compatibility; CVT transmission oil is crafted to meet Type CVTF-II specifications
- [Contents]: Vehicle lubricant package includes 1 bottle of Idemitsu SB2 CVT oil transmission fluid; 1 bottle of 5 quart (4.7L) CVT trans fluid makes refilling your vehicle more convenient
The bulletin is limited to its listed applications and conditions. It is not evidence of a universal defect, a quantified failure rate, or a blanket recall. Apply it only when the vehicle and symptoms fall within its scope.
Quick Recap
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- Compatible with Subaru CVTs: Specifically designed for Subaru continuously variable transmissions, particularly TR580, ensuring precise performance with CVTF II specification. Ideal for automatic and manual transmission systems requiring hydraulic pressure, lubrication, and friction.
- Smooth Shifting Performance: Designed with precise frictional properties to support smooth, consistent gear shifts, preventing hard or jerky transitions, and ensuring superior performance in high-torque applications.
- Extended Transmission Life: Advanced formulation resists buildup and uses anti-wear technology to protect belts, gears, and pulleys, while high viscosity properties withstand intense temperatures.
- Optimal Viscosity Stability: The fluid maintains excellent viscosity at both high and low temperatures, ensuring efficient lubrication and friction control even under extreme conditions.
- Certified Quality: Manufactured to meet the highest quality standards, backed by ISO certifications, and trusted by leading automotive manufacturers for reliable performance and protection.
Rank #4
- 8 Quarts of genuine Subaru CVTF-II fluid
- SOA427V1660 x8 This is green fluid
- 2013-2019 Crosstrek with CVT non hybrid, 2014-2016 Crosstrek CVT hybrid
- 2014-2023 Forester 2.5 Naturally Aspirated with CVT non turbo (not for wilderness)
- 2010-2019 Legacy 2.5 FB25 with CVT, 2010-2014 Legacy 3.6 with CVT, 2010-2019 Outback 2.5 FB25 with CVT, 2010-2014 Outback 3.6 with CVT, 2012-2023 Impreza 2.0 non turbo with CVT
What to verify before servicing or buying fluid
- Identify the vehicle’s model year, engine, and market; TR690 alone does not establish exact fitment.
- Check the applicable Subaru service manual and current parts or service information for the VIN-specific fluid specification.
- Do not mix CVT fluid varieties or assume that one TR690 application’s fluid applies to another.
- For seepage, first establish that the fluid is CVTF and determine whether the vehicle is covered by the relevant bulletin before repair.
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