What coolant does the 2010-2023 Lexus GX take?

The 2010-2023 Lexus GX takes Toyota Super Long Life Coolant (SLLC). The cooling system holds about 16.3 quarts. This is the spec from the owner's manual, which is the final word.

How much coolant does the 2010-2023 Lexus GX hold?

The 2010-2023 Lexus GX cooling system holds about 16.3 quarts for a full drain and fill. For a top-off you only add what's low, mixed 50/50 with distilled water unless you're using a pre-diluted coolant.

2010-2023 Lexus GX coolant type & capacity

The exact coolant your GX takes, the color, how much the system holds, and when to change it. The coolant type is straight from the owner's manual — the real authority — so you buy the right jug the first time.

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Coolant type

Toyota Super Long Life Coolant (SLLC)

OATpink

From the owner's manual. The coolant type is a single-source spec — your owner's manual or the OEM parts catalog is the authority, and it's the final word.

System capacity

16.3 qt

Manufacturer figure

Same familyOAT — the same coolant family as your car, not the named OEM spec. Confirm compatibility before mixing.

OET Extended Life Orange 50/50 Prediluted Antifreeze/Coolant

PEAK · CCT 6.6/10

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Where this came from

2020 Lexus GX460 Owner's Manual (Specifications, Cooling system) — source

The coolant type is a single-source spec from the owner's manual or OEM parts catalog — we never dress that up as cross-checked against two sources, because it isn't. The system capacity carries our verified badge only when two independent sources agree on it. Coolant color is a rough hint at chemistry, not a guarantee — match the spec, not the color, and never mix families. Your owner's manual is always the final word.