Quick answer
Mazda coolant: if your cap is marked FL22, Mazda recommends FL-22 coolant. MazdaShop sells it as a 55% pre-diluted coolant (part 0000-77-508F-20). Do not add water to it.
Key takeaways
- Mazda coolant facts here are quoted from cited Mazda documents or labelled as coolant-maker claims.
- 1 products list a Mazda-family spec code. 2 more name Mazda in their application text (guidance only).
- Your owner's manual decides. Specs vary by model, engine, market and year.
- Do not choose by colour.
- Independent; not affiliated with Mazda.
What coolant does Mazda use?
Mazda coolant: if your cap is marked FL22, Mazda recommends FL-22 coolant. MazdaShop sells it as a 55% pre-diluted coolant (part 0000-77-508F-20). Do not add water to it.
- The 2022 CX-9 manual says: "If the FL22 mark is shown on or near the cooling system cap, use of FL-22 is recommended when replacing engine coolant. Using engine coolant other than FL-22 may cause serious damage to the engine and cooling system." [1]
- MazdaShop lists FL-22 (part 0000-77-508F-20) as a "Premium Pre-diluted Antifreeze and Engine Coolant (DO NOT ADD WATER)", "Mazda Warranty Approved", 55% concentration, freezing point -43 °C. [2]
Numbers in brackets refer to the sources at the end of this page. Lines without a number summarise coolant makers' literature rather than an Mazda document.
Genuine Mazda coolant in our directory
These are coolants sold by the vehicle maker or its parts brand. Each product page shows exactly what the source publishes, with "not published" where it is silent.
| Product | Brand | Chemistry | Colour | Form | Why it is listed |
|---|---|---|---|---|---|
| Mazda Extended Life Coolant FL-22 | Mazda | not published | not published | Premix (ready to use) | Genuine / OE parts brand |
Mazda spec codes listed by coolant makers
These Mazda-family codes appear in the manufacturer data of the 1 products in our directory that list them. A code here means at least one coolant maker states its product meets it. Your manual tells you which code, if any, applies to your vehicle.
| Spec code | Products whose maker lists it |
|---|---|
| Mazda FL-22 | 1 |
Coolants that list a Mazda spec (per their manufacturer)
Each row reads "meets [code] per [brand]". The wording ("approved", "meets or exceeds", "recommended") is quoted on the product page. Open it before you buy.
| Product | Brand | Chemistry | Colour | Form | Why it is listed |
|---|---|---|---|---|---|
| Mazda Extended Life Coolant FL-22 | Mazda | not published | not published | Premix (ready to use) | Lists Mazda FL-22 |
Coolants whose maker names Mazda (guidance only)
These products do not list a Mazda spec code, but their manufacturer's application text names Mazda (for example "recommended for Toyota, Honda, Nissan…"). That is a weaker claim than a spec code. Treat it as guidance, check the exact wording, and follow your manual.
| Product | Brand | Chemistry | Colour | Form | Why it is listed |
|---|---|---|---|---|---|
| Prestone MAX Asian Vehicles (Green) Antifreeze + Coolant | Prestone | not published | Green | not published | Maker names Mazda in its text |
| Zerex Asian Vehicle Blue Antifreeze Coolant | Zerex | HOAT | Blue | not published | Maker names Mazda in its text |
Not sure which coolant your car takes?
Find your coolant →Colour and chemistry
Among the 4 products on this page, the listed colours are Green (1), Blue (1), and the listed chemistries are HOAT (1). Colour is a dye chosen by each maker, so two coolants of the same colour can be chemically different, and the same chemistry can come in different colours. Match the spec or the named factory coolant, not the colour. See coolant colours explained and OAT vs HOAT vs IAT.
Topping up and mixing
If the reservoir is low, top up only with the coolant your manual specifies, and use the same premix or concentrate ratio. Mixing chemistries can reduce corrosion protection and shorten coolant life. Some makers (Mopar, Mercedes-Benz) explicitly say not to mix specs. If an unknown coolant has been added, a flush and refill is safer than topping up. Use the mixing checker and our coolant flush guide. Never open a hot radiator or reservoir cap.
Varies by model and year
Mazda has changed coolant specs over the years, and a spec can differ by engine and market (for example North America vs Europe). Electric and hybrid models may use separate loops with their own fluids. This page does not tell you which code applies to your vehicle. Your owner's manual, the reservoir cap label or a dealer does.
When to see a mechanic
See a dealer or qualified mechanic if the coolant looks rusty, oily or sludgy, if the engine overheats or the coolant warning light comes on, or if you cannot identify the correct spec. See coolant warning light and coolant leaks.
Frequently asked questions
What coolant does Mazda use?
Mazda coolant: if your cap is marked FL22, Mazda recommends FL-22 coolant. MazdaShop sells it as a 55% pre-diluted coolant (part 0000-77-508F-20). Do not add water to it.
Which coolants meet Mazda specs?
1 products in our directory list a Mazda-family spec code, including Mazda Extended Life Coolant FL-22. Each product page quotes the maker's wording.
Can I use a universal coolant in my Mazda?
Only if your owner's manual allows it, or if the product's maker states it meets the exact spec your manual names. "Universal" or "all makes" wording is not the same as a listed Mazda spec.
What colour is Mazda coolant?
Colour varies by product and era and is not a spec. Products on this page are listed as Green, Blue. Match the spec or named coolant instead.
Is Coolant.com affiliated with Mazda?
No. Coolant.com is independent and not affiliated with or endorsed by Mazda. We use the name only to say which vehicles a spec relates to.
New to cooling systems? Start with how a car cooling system works. Looking for a product? Search the coolant directory or match your manual's spec with Find my car coolant. See also coolant by car make and coolants by brand.