2026 Subaru Outback transmission fluid capacity and fluid specs
GarageDex's fluid data shows the 2026 Subaru Outback uses the TR690 automatic transmission, which holds 12.6 quarts of fluid as a total fill.
Shop transmission fluid Match the specification on the bottle to your manual
Key takeaways
- Transmission: TR690 automatic transmission, 12.6 qt total fill.
- Total fill is the whole system; a drain-and-refill takes a third to half.
- Brake fluid grade: read it off the reservoir cap.
- Fluid specification is not named by the source - use the owner's manual.
| Engine | Transmission | Total fill | Fluid spec | Brake fluid | Gear oil |
|---|---|---|---|---|---|
| 2.4L 4-cyl | TR690 automatic | 12.6 qt | per owner's manual | see reservoir cap | rear GL-5 75W-90 0.85 qt front GL-5 75W-90 1.25 qt |
Fluids for the 2026 Subaru Outback
Buy fluid that states the specification your manual names. Multi-vehicle fluids list the specs they meet on the back label - if yours is not listed, it is the wrong bottle.
Transmission fluidYou need about 13 quarts for a full fillShop fluid DOT 3 or DOT 4 brake fluidA quart covers a full flushShop brake fluid Fluid transfer pumpMost modern transmissions have no dipstick tube - you fill from belowShop pumps
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Other Outback years
Source: AMSOIL Auto & Light Truck lookup. Capacities are total system fills; a drain-and-refill takes less. Where no fluid specification is shown, the source lists only a catalog code, so use the specification printed in your owner's manual - the wrong transmission fluid damages a transmission.