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B47 Oil Capacity, Grade & Service Data

Reference specification for the BMW B47 2.0-litre diesel engine, fitted across the 1, 2, 3, 4, 5 Series, X1, X2, X3, X4, and more. Correct oil capacity, viscosity, BMW Longlife-04 approval, and the real‑world maintenance advice that keeps these engines reliable.

BMW B47 diesel engine bay with oil filler cap visible, workshop setting
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The BMW B47 engine takes approximately 5.0 litres with filter change [PLACEHOLDER — confirm vs BMW TIS], and 4.5 litres without [PLACEHOLDER], to BMW Longlife-04 low‑SAPS specification, typically 5W-30 or 0W-30.

Full specification table, variant differences, common mistakes, and the oil‑dilution caveat explained below.

The Specification Table

SpecValue
Capacity with filter change~5.0 litres [PLACEHOLDER — confirm vs BMW TIS]
Capacity without filter change~4.5 litres [PLACEHOLDER — confirm]
Viscosity grade5W-30 or 0W-30 (low SAPS)
BMW specificationLonglife-04 (LL-04) [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 B47 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 (F20)Standard 5.0L figure appliesTop‑mounted, accessible from above
2 Series (F22)Standard figureTop‑mounted
3 Series (F30)Standard figure, some early builds noted slightly higher capacityTop‑mounted
3 Series (G20)Standard figure appliesTop‑mounted
5 Series (G30)Standard figure, larger oil cooler may add ~0.2LTop‑mounted
X3 (G01)Standard figure, slight variation due to engine bay layoutTop‑mounted
X1 (F48)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 can lead to oil dilution from DPF regeneration, a well‑documented characteristic of common‑rail diesels. This is why many independent specialists we've spoken to recommend halving the official interval to around 8,000–10,000 miles for cars used predominantly in town [EM-INTERVIEW]. The B47 is a robust engine, but the extra cost of an annual oil change is small compared to the cost of a DPF or an injector set damaged by poor oil quality. For full details on the failure patterns associated with oil dilution, see our EGR cooler failure page (though B47 EGR coolers are less problematic than earlier N47, the general principle of oil degradation applies).

Also note that the oil specification Longlife-04 is critical — using an older LL-01 oil in a B47 can shorten DPF life. Modern low‑SAPS oils are formulated specifically to protect the after‑treatment system.

Common Mistakes

How to Verify on the Actual Vehicle

The oil filler cap on the B47 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 B47 can have serious consequences. The Longlife-04 standard is not a marketing label — it's a technical requirement that ensures the oil contains the right level of sulfated ash, phosphorus, and sulfur (SAPS) to protect the diesel particulate filter and the selective catalytic reduction (SCR) system. Using a higher‑SAPS oil will eventually clog the DPF, leading to an expensive replacement that correct oil choice would have avoided. 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 emissions systems that depend on correct oil, see our VANOS system explained (though VANOS is on petrol, the principle of following manufacturer specs is universal).

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