Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBMW2009535XI 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCEFUEL DELIVERYFUEL SYSTEM - OPERATING FLUIDS1.1 MINIMUM OCTANE AND AKI RATINGS FOR GASOLINE ENGINES
2009 BMW 535xi 4D Sedan, Automatic
1.1 Minimum Octane and AKI Ratings for Gasoline Engines
2009 BMW 535xi 4D Sedan, AutomaticSECTION 1.1 Minimum Octane and AKI Ratings for Gasoline Engines
Up to 2005 model year
MINIMUM OCTANE AND AKI RATINGS FOR GASOLINE ENGINES
| Leaded Gasoline | |||
|---|---|---|---|
| Premium Grade | Regular Grade | ||
| RON (Research Octane No.) | at least 91.0 | ||
| MON (Motor Octane No.) | at least 82.7 | ||
| AKI* | at least 93.0 | at least 87.0 | |
| Unleaded Gasoline | |||
| Premium Grade | Mid-Range | Grade Regular Grade | |
| RON | at least 98.0 | at least 95.0 | at least 91.0 |
| MON | at least 88.0 | at least 85.0 | at least 82.5 |
| AKI* | at least 93.0 | at least 90.0 | at least 87.0 |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.