Mercedes Benz GLS450 Fluid Capacities
Factory manual fluid capacities for the Mercedes Benz GLS450. Exact capacities and specs extracted from the LEMON service manual archive.
Last updated: 2026-10-29 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
2023-2024 Mercedes Benz GLS450: 5.60 OZS. (0.16 L) — PAG Oil Note: Only use products recommended by Mercedes Benz.
| Generation | Years | Top spec |
|---|---|---|
| 2023-2024 | 2023-2024 | 5.60 OZS. (0.16 L) — PAG Oil Note: Only use products recommended by Mercedes Benz. |
| 2020-2022 | 2020-2022 | 3.90 OZS. (0.11 L) — PAG Oil Note: Only use products recommended by Mercedes Benz. Approximate capacity. |
| 2019 | 2019 | 3.90 OZS. (0.11 L) — PAG Oil Note: Only use products recommended by Mercedes Benz. Approximate capacity. |
This vehicle's factory manual
The spec is above. This opens the 2023 Mercedes Benz GLS450 factory book. Use another year if yours is older.
Mercedes Benz GLS450 maintenance schedule
Know the exact fluid capacities job for your Mercedes Benz GLS450
2023-2024 Mercedes Benz GLS450: 5.60 OZS. (0.16 L) — PAG Oil Note: Only use products recommended by Mercedes Benz.
Fluid type and capacity can change by engine, drivetrain, and transmission. Verify the exact branch before filling anything. Once the spec is confirmed, use the supplies and purchase links below to build the full one-trip shopping list before you start the repair.
Exact Vehicle Check
The button opens the factory book for this vehicle. Use the engine picker only when your trim is not the one this page already matched.
2023-2024
- →Only use products recommended by Mercedes Benz.
- →For further details see "Air conditioner specification label". Only use products recommended by Mercedes Benz. Approximate capacity.
- →Only use products recommended by Mercedes Benz. Approximate capacity.
- →Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products).
- →Reserve tank capacity: 3.2 gals.
2020-2022
- →Only use products recommended by Mercedes Benz. Approximate capacity.
- →For further details see "Air conditioner specification label". Approximate capacity.
- →Only use products recommended by Mercedes Benz.
- →Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products).
- →Reserve tank capacity: 3.2 gals.
2019
- →Only use products recommended by Mercedes Benz. Approximate capacity.
- →For further details see "Air conditioner specification label". Approximate capacity.
- →Only use products recommended by Mercedes Benz.
- →Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products).
- →Reserve tank capacity: 3.2 gals.
2017-2018
- →Only use products recommended by Mercedes Benz. Approximate capacity.
- →For further details see "Air conditioner specification label". Approximate capacity.
- →Only use products recommended by Mercedes Benz.
- →Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products).
- →Reserve tank capacity: 3.2 gals.
Manual already checked Amazon for you
You came here for the exact spec. Now here is the exact part — plus the two things people always forget and have to run back to the store for.
Mercedes Benz GLS450 Fluid Service Kit
Buy all the fluids your Mercedes Benz GLS450 needs in one cart.
We earn a small commission if you buy through these links — at zero extra cost to you. We only suggest items that match the factory specs on this page.
Fluids — Manual's Parts List
Everything for a full fluid service weekend.
- 1Engine OilShop →
Match viscosity to your spec
- 2CoolantShop →
Match color/chemistry — never mix types
- 3Long-Neck FunnelShop →
Transmission and differential fill holes are recessed
- 4Fluid Extraction PumpShop →
Remove old brake fluid from reservoir without mess
- 5Shop RagsShop →
You will need more than you think
Get everything at once
One search shows all of the above on a single page.
Links go to Amazon via our affiliate store (aiautorepair-20). We earn a small commission at no extra cost to you — it keeps the site running and the data free.
One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
Fluid Extraction Pump
Cleanly remove old fluids from reservoirs.
Clean Shop Rags
Lint-free rags for cleaning dipsticks and spills.
Multi-Purpose Funnel
Long-neck funnel for hard-to-reach fill points.
Nitrile Gloves
Keep hands clean during multi-fluid maintenance.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your Mercedes Benz GLS450 so the job is ready when the parts arrive.
Frequently Asked Questions
- Where is this data from?
- Extracted directly from the LEMON factory service manual archive. Sources are cited per generation.
- What fluid capacities does a Mercedes Benz GLS450 use?
- 2023-2024 Mercedes Benz GLS450: 5.60 OZS. (0.16 L) — PAG Oil Note: Only use products recommended by Mercedes Benz.
- Why do fluid capacities vary by generation for the Mercedes Benz GLS450?
- Different engine options, transmission types, and cooling system designs across model years change total fluid volumes. Always use the capacity listed for your exact year and engine code — do not guess across generations.
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Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-10-29