⚠️ Subaru Position
Subaru prescribes fuel tank removal and/or fuel pump access panel removal as the procedures for accessing fuel tank contents.
Subaru warranty excludes damage from fuel contamination. Subaru Service Manual documents specific procedures that USIFDA certified technicians follow.
About Subaru
Subaru Corporation (formerly Fuji Heavy Industries) is a Japanese multinational corporation primarily known for its automotive brand Subaru. Headquartered in Tokyo, Subaru is famous for its boxer engines and symmetrical all-wheel drive system.
Subaru Technology
| Technology | Description |
|---|---|
| Boxer Engine | Horizontally-opposed cylinder configuration |
| Symmetrical AWD | Standard on all models (except BRZ) |
| e-BOXER | Mild hybrid boxer engine system |
| EyeSight | Advanced driver assistance system |
Toyota Partnership
Toyota owns 20% of Subaru Corporation, with collaboration on:
- Subaru BRZ / Toyota GR86 shared sports car platform
- Subaru Solterra / Toyota bZ4X shared EV platform
Subaru Service Manual Procedure
"Fuel Tank Assembly Removal
CAUTION: Perform work in well-ventilated area. Keep fire and sparks away.
- Release fuel pressure (remove fuel pump relay, run engine until stall)
- Disconnect ground cable from battery
- Remove rear seat cushion
- Remove service hole cover
- Disconnect fuel pump connector
- Drain fuel using hand pump into approved container
- Raise vehicle on lift
- Disconnect fuel filler pipe
- Disconnect evaporation hose
- Disconnect fuel hose from tank
- Support fuel tank
- Remove fuel tank band bolts
- Lower fuel tank"
Subaru Fuel Pump Access
Subaru models typically have fuel pump access panels:
- Outback, Legacy - Access under rear seat
- Forester - Access under rear seat
- XV/Crosstrek - Access under rear seat
- Impreza, WRX - Access under rear seat
- BRZ - May require tank drop
Popular Subaru Models in USA
Subaru Fuel System Notes
Key considerations for Subaru fuel contamination:
- All petrol: Subaru does not sell diesel vehicles in USA, reducing misfuel risk
- Turbo models: WRX and Levorg turbo engines more sensitive to contamination
- Direct injection: FA/FB engines with direct injection require careful handling
- Boxer layout: Engine configuration does not affect fuel system access
Diesel-in-Petrol Contamination
Adding diesel to a Subaru petrol engine requires:
- Complete fuel system drain via access panel or tank drop
- Fuel filter replacement
- System flush before refilling with petrol
- Direct injection models may require injector inspection
✓ Subaru BRZ / Toyota GR86
The Subaru BRZ and Toyota GR86 share the same platform and engine (FA24). The fuel system access may vary - some models require tank drop while others have limited access. Contact USIFDA for specific guidance.
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