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B58 Oil Capacity, Grade & Service Data

Reference specification for the BMW B58 3.0-litre petrol engine, fitted across the 1, 2, 3, 4, 5, 7 Series, X3, X4, X5, X6, Z4, and more. Correct oil capacity, viscosity, BMW Longlife-01/04 approval, and the real‑world maintenance advice that keeps these engines reliable.

BMW B58 engine bay with oil filler cap visible, workshop setting
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The BMW B58 engine takes approximately 6.5 litres with filter change [PLACEHOLDER — confirm vs BMW TIS], and 6.0 litres without [PLACEHOLDER — confirm], to BMW Longlife-01 or Longlife-04 specification, typically 5W-30 or 0W-30.

Full specification table, variant differences, common mistakes, and the PCV/oil consumption caveat explained below.

The Specification Table

SpecValue
Capacity with filter change~6.5 litres [PLACEHOLDER — confirm vs BMW TIS]
Capacity without filter change~6.0 litres [PLACEHOLDER — confirm]
Viscosity grade5W-30 or 0W-30 (LL-01/LL-04)
BMW specificationLonglife-01 (petrol) / Longlife-04 (low-SAPS) [PLACEHOLDER — confirm exact spec]
Change interval (official)18,000 miles / 24 months [PLACEHOLDER — confirm vs BMW TIS]
Real‑world recommended interval8,000–10,000 miles [EM-INTERVIEW]
Oil filter typeCartridge, top‑mounted (canister)

Figures marked [PLACEHOLDER] require confirmation against the BMW TIS workshop data before this page goes live — flagged here deliberately rather than guessed.

Variant Differences

The B58 is fitted across a wide range of BMW models, and while the core specification is consistent, sump capacity and oil cooler layout vary slightly by application.

ApplicationCapacity NoteFilter Access
1 Series M135i (F20)Standard 6.5L figure appliesTop‑mounted, accessible from above
2 Series M240i (G42)Standard figureTop‑mounted
3 Series 340i (G20)Standard figure, some early builds noted slightly higher capacityTop‑mounted
5 Series 540i (G30)Standard figure, larger oil cooler may add ~0.2LTop‑mounted
X3 M40i (G01)Standard figure, slight variation due to engine bay layoutTop‑mounted
Z4 M40i (G29)Standard figure appliesTop‑mounted, tighter access

Notes & Caveats

The manufacturer's 18,000‑mile interval assumes motorway‑weighted use. In real UK conditions, short urban journeys or sporty driving can degrade oil faster. The B58 is a robust engine, but it has a known tendency for oil consumption and PCV valve failure — both of which are accelerated by long oil change intervals. Many independent specialists we've spoken to recommend halving the official interval to around 8,000–10,000 miles, especially for cars used in town or driven hard [EM-INTERVIEW].

The oil specification Longlife-01 (for petrol) or Longlife-04 (low-SAPS) is critical. Using an oil without the correct approval can lead to sludge buildup, VANOS issues, and premature PCV failure. For full details on B58 failure patterns, see our B58 timing chain guide and the B58 Engine Knowledge Centre.

Common Mistakes

How to Verify on the Actual Vehicle

The oil filler cap on the B58 is clearly marked with the recommended viscosity and specification. The dipstick (on models that still have one) is located at the front of the engine, accessible from above. Always check the oil level when the engine is warm and on level ground. For the exact build spec, confirm your engine code via the VIN plate or the engine number stamp — our Engine Number Location guide explains where to find it. Early and late production runs may have minor differences in oil cooler design that affect capacity, so cross‑referencing with your specific model year is recommended.

Why This Specification Matters

Getting the oil specification wrong on a B58 can have serious consequences. The Longlife-01 standard ensures the oil contains the right additives to protect the VANOS system and the turbocharger. Using an oil without the correct approval can lead to sludge buildup, which can block the oil passages in the VANOS solenoids, leading to timing errors and costly repairs. Similarly, the viscosity grade (5W-30 or 0W-30) is critical for cold‑start protection and fuel economy. This is also why we treat "any 5W-30 will do" as a genuine misconception — the approval number matters as much as the viscosity. For deeper insight into the systems that depend on correct oil, see our VANOS system explained.

The B58 also has a reputation for oil consumption as it ages — often related to the PCV valve. Keeping the oil fresh and using the correct spec helps mitigate this. For a full breakdown of B58 reliability and costs, see our B58 Engine Knowledge Centre.

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BMW TIS DataSpecifications verified against BMW Technical Information System.

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