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2018-2026 Jeep Wrangler coolant type & capacity

The exact coolant your Wrangler 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

Mopar OAT MS.90032
OATpurple

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

11.2 qt

Verified · 2 sources · Jun 2026

Change interval

First: 150,000 mi

Then: every 150,000 mi

Meets your spec
Mopar OAT 10 Year/150,000 Mile Coolant 50/50 Premixed
OAT 10 Year/150,000 Mile Coolant 50/50 Premixed

Mopar · CCT 6.5/10

View on AmazonRead our review
Where this came from
  • 2021 Jeep Wrangler (JL) Owner's Manual - Technical Specifications, Fluid Capacities + Engine Fluids (3.6L) — source
  • ExtremeTerrain - Jeep Wrangler JL Fluid Capacities (3.6L), independent retailer capacity compilation — 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.