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2021 Mercedes-Benz G550 oil capacity, type & filter

The 2021 Mercedes-Benz G550 takes 10 qt of 0W-30 oil.

Applies to checked engine: 4.0L 8-Cyl Turbo.

Capacity 10 qt i Based on 1 checked source: Pennzoil OATS. 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 OEM oil approval is not source-backed on this page; confirm the bottle or owner's manual before checkout. Verified fit
Oil Filters
PRO-TEC Shown first PXL10077 Search PXL10077

Confirm PRO-TEC PXL10077 in the retailer selector before checkout.

i Based on 1 checked source: RockAuto. Additional cross-check is still pending: another filter catalog cross-check and alternate part-number support. Use it as a reference, then confirm the exact filter part number at checkout. See how we verify. Learn how we verify fitment

3 sources checked Last checked: 2026-06-27 How we verify →

Where to Buy View Data Sources
Buy oil & filters:
Walmart → AutoZone → Amazon → O'Reilly →

2021 Mercedes-Benz G550 oil specs: capacity conditions and filter notes

Verify before checkout

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

Source coverage for the 2021 Mercedes-Benz G550

Capacity sources

Supported by Pennzoil OATS.

Oil type sources

Supported by Pennzoil OATS and AMSOIL Lookup.

Filter sources

Supported by RockAuto.

Source coverage

3 checked source rows for the 2021 Mercedes-Benz G550.

Before ordering for this 2021 Mercedes-Benz G550

Checkout verification checklist
4.0L 8-Cyl Turbo Buy →
Capacity
10 qt
Oil type
0W-30
Filter
PRO-TEC PXL10077

Source check: Last checked 2026-06-27 from AMSOIL Lookup, Pennzoil OATS, and RockAuto.

Mercedes-Benz G550 oil specs by year

This table includes checked Mercedes-Benz G550 model years available in our database.

Year Capacity Oil type Filter
2023 10 qt 0W-30 PRO-TEC PXL10077
2022 10 qt 0W-30 PRO-TEC PXL10077
2021 Current page 10 qt 0W-30 PRO-TEC PXL10077
2018 9.5 qt 0W-40 PRO-TEC PXL10077

How we verified 2021 Mercedes-Benz G550 oil data

How we verify fitment

Checked fitment data. Last checked: 2026-06-27.

This page checked 3 sources for the 2021 Mercedes-Benz G550. The table lists which checked source contributed capacity, oil type, or filter evidence.

We checked leading oil brands and aftermarket filter catalogs so you don't have to.

Confidence
Cross-check pending i Some oil fields are based on checked source data but still need stronger cross-check evidence. Review area: 4.0L 8-Cyl Turbo capacity and 4.0L 8-Cyl Turbo oil filter. 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
2026-06-27
Field-level source support
  • Capacity: Pennzoil OATS
  • Oil type: Pennzoil OATS and AMSOIL Lookup
  • Filter: RockAuto
Source Supports Checked Link
AMSOIL Lookup Oil type 2026-06-27 Visit brand site
Pennzoil OATS Capacity, Oil type 2026-06-27 Visit brand site
RockAuto Filter 2026-06-27 Checked source

2021 Mercedes-Benz G550 oil FAQ

Is the oil capacity measured with or without the filter?

Capacity condition matters. With filter includes a new filter. Service fill is the typical drain-and-fill amount. Dry fill is for a fresh empty engine only.

Why should I confirm before buying?

Retailer catalogs can update separately. Confirm the exact 2021 Mercedes-Benz G550 selector at checkout before you buy.

Do I also need to match the OEM oil approval?

Yes. Viscosity is only one part of the oil spec. Match the oil approval listed in your owner's manual or on the bottle before checkout.

How often should I change the oil on a 2021 Mercedes-Benz G550?

Use the oil-life monitor or the interval in your owner's manual for this engine. Severe service can require a shorter interval.

Do I need a new drain plug gasket?

Replace it when your vehicle uses a serviceable gasket or crush washer. Confirm the gasket size and drain plug torque from the service manual or parts counter.

2021 Mercedes-Benz G550 maintenance checklist

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

Where to buy

These are retailer search paths for your vehicle. The specs above are checked — use the retailer's vehicle selector at checkout to confirm before ordering.

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

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