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2018 BMW M550i xDrive oil capacity, type & filter

The 2018 BMW M550i xDrive takes 11.1 qt of 0W-30 oil. Supported by 3 checked sources.

Applies to checked engine: 4.4L 8-Cyl Turbo.

Catalog selectors list the 2018 BMW M550i xDrive as its own oil row, separate from nearby BMW model rows. In the checked rows, the checked capacity, viscosity, and filter pattern is not identical to 2018 BMW 320i xDrive, 2018 BMW 330i xDrive, and 2018 BMW 340i xDrive. Confirm the exact model name before buying oil or a filter; similar model names can share or split catalog rows. Current-row label: model qualifier M550i. Nearby catalog rows use 320i; choose the matching qualifier in the seller selector.

Capacity 11.1 qt i Based on 1 checked source: AMSOIL Lookup. Additional cross-check is still pending: a second checked capacity source and capacity condition (service fill / with filter vs dry fill). Use it as a reference, then confirm the service-fill / with-filter amount before adding oil. See how we verify. Learn how we verify fitment
Oil type 0W-30 i Based on 1 checked source: AMSOIL Lookup. Additional cross-check is still pending: a second checked oil-type source. Use it as a reference, then confirm the viscosity grade for this engine before checkout. See how we verify. Learn how we verify fitment OEM approval code is not listed on this page. Turbocharged engines often require oils with a manufacturer-specific certification — look for the API certification symbol on the bottle, and check your owner’s manual for the exact required approval code before buying. What does 0W-30 mean? →
Oil Filters Options cross-checked
WIX First candidate 51032 Search 51032 WIX Additional candidate 51036 Confirm in selector WIX Additional candidate 51040 Confirm in selector WIX Additional candidate 51042 Confirm in selector Purolator Additional candidate L25904 Confirm in selector

WIX 51032 is copied into the checkout checklist as the first source-backed candidate for the 4.4L 8-Cyl Turbo. 4 other candidate numbers are kept for cross-checking; confirm the exact filter in the retailer selector before buying.

3 sources checked Last checked: 2026-06-24 How we verify →

Same oil capacity and viscosity across all 6 checked years of this model.

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2018 BMW M550i xDrive oil specs: capacity conditions and filter notes

Filter part numbers

The filter part numbers listed above come from checked source rows for this vehicle and engine. Use them as candidates, then confirm the exact part number at checkout; do not substitute across engine rows.

Verify before checkout

Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.

Quick reference for this 2018 BMW M550i xDrive

Service specs at a glance
4.4L 8-Cyl Turbo Search this engine row →
Capacity
11.1 qt
Oil type
0W-30
Interval
Check owner's manual / oil-life monitor
Filter
WIX 51032

Source check: Last checked 2026-06-24 from AMSOIL fitment lookup, Pennzoil oil application database, and Purolator fitment catalog.

BMW M550i xDrive oil specs by year

6 checked BMW M550i xDrive years in the database. Open the exact year page to confirm oil spec for your engine before buying.

Year Capacity Oil type Filter
2023 11.1 qt 0W-30 WIX 51032
2022 11.1 qt 0W-30 WIX 51032
2021 11.1 qt 0W-30 WIX 51032
2020 11.1 qt 0W-30 WIX 51032
2019 11.1 qt 0W-30 WIX 51032
2018 Current page 11.1 qt 0W-30 WIX 51032

How we verified 2018 BMW M550i xDrive oil data

How we verify fitment

Checked fitment data. Last checked: 2026-06-24.

This page checked 3 sources for the 2018 BMW M550i xDrive. Capacity: AMSOIL fitment lookup; oil type: AMSOIL fitment lookup; filter: Purolator fitment catalog and AMSOIL fitment lookup.

Confidence
Cross-check pending i Some oil fields are based on checked source data but still need stronger cross-check evidence. Review area: 4.4L 8-Cyl Turbo capacity and 4.4L 8-Cyl Turbo oil type. Use the listed values as references and confirm the exact engine before ordering or adding oil. See how we verify. Learn how we verify fitment
Sources checked
3
Last checked
2026-06-24
Field-level source support
  • Capacity: AMSOIL fitment lookup
  • Oil type: AMSOIL fitment lookup
  • OEM oil spec: Not source-backed on this page
  • Filter: Purolator fitment catalog and AMSOIL fitment lookup
  • Change interval: Not source-backed on this page
Source Supports Checked Link
AMSOIL fitment lookup Capacity, Oil type, Filter 2026-06-24 Visit brand site
Pennzoil oil application database Checked 2026-06-24 Visit brand site
Purolator fitment catalog Filter 2026-06-24 Visit brand site

2018 BMW M550i xDrive oil — questions before buying

Can I use 5W-30 instead of 0W-30 in my 2018 BMW M550i xDrive?
The checked source rows on this page list 0W-30 for the 2018 BMW M550i xDrive. Use 0W-30 unless your owner's manual, oil cap, or service information for your exact engine allows another grade. If a retailer suggests 5W-30, match the engine row first and confirm the grade before buying.

2018 BMW M550i xDrive maintenance checklist

One part checked. Look up the rest while you're here.

Where to buy

These are retailer search paths for listed specs on this page. Use the retailer's vehicle selector at checkout to confirm before ordering.

This section may include affiliate or sponsored retailer links. They are search paths, not fitment evidence.

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Other 2018 BMW M550i xDrive lookups: Cabin air filter · Engine air filter · Wiper blade size