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2021-2026 Toyota Sienna coolant type & capacity

The exact coolant your Sienna 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

11.4 qt

Manufacturer figure

Same familyOAT — the same coolant family as your car, not the named OEM spec. Confirm compatibility before mixing.
PEAK OET Extended Life Orange 50/50 Prediluted Antifreeze/Coolant
OET Extended Life Orange 50/50 Prediluted Antifreeze/Coolant

PEAK · CCT 6.6/10

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Where this came from
  • 2021 Toyota Sienna 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.