(Please take this advice as general in nature and choose what best works for you and your situation).
N2x Important Performance Recommended Service Intervals:
Engine Oil | 10,000 KM or 5000 KM if using Ethanol Fuels regularly |
Transmission (Auto) Oil | 80,000 KM |
Transmission (Manual) Oil | 50,000 KM |
Transmission Oil Aisin AWF8F45 (B48E) | 30,000 KM |
Differential Fluid | 50,000 KM |
Transfer Case Fluid | 50,000 KM |
Spark Plugs | OEM Gap 50,000 KM (Do Not Gap Plugs) |
Coil Packs | 80,000 KM |
Injectors | 80,000 KM |
Coolant | 85,000 KM |
Brake Fluid | 50,000 KM |
Brake Pads | 50,000 KM or When Indicator Lamp Is Active |
Intake Filter | 50,000 KM |
Cabin Filter | 30,000 KM |
Accessories Belt | 100,000 KM |
Fuel Filter (If Present) | 50,000 KM |
Charge Pipes:
Turbo Inlet:
Catch Cans:
Pistons:
HPFP:
Understanding Oil Weight Classifications:
BMW LL (Long Life) oil ratings are specifications set by BMW for engine oils to ensure optimal performance and longevity of their engines. These ratings indicate the oil's suitability for various engines and driving conditions. The primary BMW LL ratings include:
These ratings ensure that the oils meet BMW's stringent requirements for performance, efficiency, and engine protection. However BMW Engines can support the use of a select few other oils meeting other oil grading standards such as:
Additionally, BMW oils may meet or exceed other international standards such as:
BMW B4x engines are compatible with all LL ratings, including LL-98 and LL-04. However, the suitability and lifespan of the oil depend on the specific use case. For example, FE-based LL ratings are not designed for performance applications and can cause issues when using fuels like ethanol. Therefore, using an LL-98 rated oil is acceptable as long as it meets or exceeds BMW's standards. The duration of oil use depends on your application, and selecting the appropriate oil is crucial. Using non-LL based oils can pose significant risks since these oils have not been validated for use in BMW engines and should be avoided.
Below are oils recommended for the B4x engine, these oils are in part based on what the BMW manual recommends and what has worked well from the performance industry standpoint:
Worth noting that the oil weights below will not always be 100% what you may need if you have had an engine rebuild in this case refer to your engine builder on what oil weight you should run based on your main and rod bearing clearances
For Extreme Racing Applications
Oil Weight | Oil Brand | Oil Compliance Rating |
---|---|---|
5W-30 | Penrite Racing 5 | A3/B4, LL-98 |
For Most Climates
Oil Weight | Oil Brand | Oil Compliance Rating |
---|---|---|
5W-30 | Castrol EDGE | A3/B4, LL-01 |
5W-30 | LIQUI MOLY Special Tec | A3/B4, LL-01 |
5W-30 | Pennzoil Platinum Euro | A3/B4, LL-01 |
5W-30 | MOTUL 8100 X-CESS | A3/B4, LL-01 |
5W-30 | RAVENOL RSP | A3/B4, LL-01 |
5W-30 | Shell Helix Ultra | A3/B4, LL-01 |
5W-30 | Penrite Racing 5 | A3/B4, LL-98 |
5W-30 | Shell Helix Ultra l | A3/B4, LL-01 |
For Very Cold Climates
Oil Weight | Oil Brand | Oil Compliance Rating |
---|---|---|
0W-30 | Castrol Edge | A3/B4, LL-01 |
0W-30 | Penrite HPR 0 | A3/B4, LL-01 |
Specific Recommendations for B4x/B4xTU cars that maintain their GPF/OPF
Oil Weight | Oil Brand | Oil Compliance Rating |
---|---|---|
5W-30 | Motul Specific | A3/B4, LL-01FE |
5W-30 | Liqui Moly Special Tec B FE | A3/B4, LL-01FE |