Subaru WRX STI Coolant Type
Factory coolant type for the Subaru WRX STI.
Last updated: 2026-11-02 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
2019-2021 Subaru WRX STI: 8.20 QTS. (7.76 L) — SUBARU Super Coolant.
| Generation | Years | Top spec |
|---|---|---|
| 2019-2021 | 2019-2021 | 8.20 QTS. (7.76 L) — SUBARU Super Coolant |
| 2018 | 2018 | 8.20 QTS. (7.76 L) — SUBARU Super Coolant |
| 2017 | 2017 | 8.20 QTS. (7.76 L) — SUBARU Super Coolant |
This vehicle's factory manual
Subaru WRX STI: choose your year, then confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Subaru WRX STI maintenance schedule
Know the exact coolant type job for your Subaru WRX STI
2019-2021 Subaru WRX STI: 8.20 QTS. (7.76 L) — SUBARU Super Coolant.
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.
2019-2021
2018
2017
2016
2015
Parts and supplies
These links search for related products. Check your year, engine, specification, and fitment with the seller before ordering.
Subaru WRX STI coolant
Confirm the specification and fitment for your exact vehicle before ordering.
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Coolant Service — Manual's Parts List
Flush or top-off — here is exactly what you need.
- 1Engine CoolantShop →
8.20 QTS. (7.76 L) — SUBARU Su — verify concentrate vs pre-mixed
- 2Distilled WaterShop →
If using concentrate — never use tap water
- 3Spill-Free FunnelShop →
Bleeds air from the heater core automatically
- 4Hose Clamp PliersShop →
Spring clamps are a pain without these
- 5Shop RagsShop →
Coolant is slippery — clean spills immediately
Get everything at once
Search results vary; confirm each item and its fitment before buying.
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One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
Engine Coolant / Antifreeze
Match the color/spec (e.g. OAT, HOAT) to your car.
Spill-Free Funnel
The best way to bleed air from the cooling system.
Coolant Tester
Check the freeze and boil protection level.
Hose Clamp Pliers
Helps move spring clamps without mangling hoses.
Shop Towels
Cleanup gear for coolant drips and burps.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your Subaru WRX STI so the job is ready when the parts arrive.
Frequently Asked Questions
- What coolant type does a Subaru WRX STI use?
- 2019-2021 Subaru WRX STI: 8.20 QTS. (7.76 L) — SUBARU Super Coolant.
- Can I use universal coolant in a Subaru WRX STI?
- Factory manuals specify exact coolant chemistry for the Subaru WRX STI. Using the wrong coolant type can cause corrosion, overheating, or gasket damage. Always match the OEM specification exactly — do not mix incompatible coolant types.
Find your service manual
Select your vehicle and check the available manual sections for your exact configuration.
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: 2026-11-02