Quick answer
Compare coolants side by side here: Pick two to four coolant products to see their manufacturer-published specs side by side: chemistry, base glycol, colour, premix or concentrate form, OEM spec codes, ASTM standards, service-life claim, freeze point and free-of claims. The tool also lists the spec codes all of them share. The page address updates, so you can share the comparison.
Key takeaways
- Up to four products, side by side.
- Shows which OEM spec codes every selected product lists.
- All data is manufacturer-published. Gaps are marked "not published".
- The share link keeps your selection.
- No prices, ratings or rankings.
What a fair comparison looks at
The most important row is OEM / industry specs listed. Two coolants are interchangeable for your car only if both meet the spec your manual names. Chemistry and colour are useful context but not proof. Service-life claims depend on conditions, usually a full flush and fill plus correct maintenance, and they are worded differently by each brand. Read each product's page for the exact conditions.
Reading the rows
| Row | How to read it |
|---|---|
| Chemistry | The manufacturer's named technology. "not published" for universal products that claim compatibility with all types. |
| OEM / industry specs | Codes as the manufacturer lists them. The product page shows whether the wording is meets, approved or recommended. |
| Service life claim | Copied as written, including units (years, miles, km, hours). |
| Freeze point | Only where published, and usually for a 50/50 mix. Check the dilution stated by the maker. |
| Free-of claims | Ingredients the manufacturer says the product is free of (for example nitrite, silicate, phosphate, borate, amine, 2-EHA). |
Use the comparison
Choose products from the lists, which are grouped by brand. Each column links to the full product page with sources.
Compare coolants side by side
Pick 2 to 4 products. The page address updates so you can share or bookmark the comparison.
Sharing and bookmarking
The address bar holds your selection as ?p=product-a,product-b. Copy it with the button, or bookmark the page. Product pages also have a "Compare" link that pre-fills this tool with similar products.
Not sure which coolant your car takes?
Find your coolant →Comparing car and data-center fluids
The directory also lists a few data-center direct-to-chip fluids (PG25 and similar). They are not engine coolants and should not be used in vehicles. For data-center fluids, use the DC coolant comparator and the DSX Ready list, and follow your CDU and hardware vendor's approvals.
Worked examples from the directory
These comparisons are generated directly from the manufacturer-published data in the directory. Click any heading to open it in the tool.
PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for Asian Vehicles - BLUE vs OEM Extended Life BLUE Antifreeze/Coolant
Listed chemistry: P-OAT vs P-OAT. Form: Premix 50/50 vs Concentrate and Premix 50/50. Spec codes both makers list: JIS K2234. So if your manual names one of the shared codes, both makers claim it. If it names a code only one lists, only that product's maker claims it.
Xstream G40 Antifreeze & Coolant Concentrate vs Castrol Radicool Si-OAT
Listed chemistry: Si-OAT vs Si-OAT. Form: Concentrate vs Concentrate. Spec codes both makers list: VW TL 774-G, MAN 324 Typ Si-OAT. Only the first lists: MB 325.6, Cummins CES 14603, Deutz DQC CC-14, Daimler Truck DTFR 29C120, MTU MTL 5048, Liebherr LH-01-COL3A. Only the second lists: MB 325.5, JIS K2234, BS 6580. So if your manual names one of the shared codes, both makers claim it. If it names a code only one lists, only that product's maker claims it.
PEAK DEX-COOL Concentrate Antifreeze + Coolant vs ACDelco DEX-COOL Extended Life Coolant (Australia/NZ)
Listed chemistry: OAT vs OAT. Form: Concentrate vs Concentrate. Spec codes both makers list: GM 6277M. Only the first lists: GMW 3420. Only the second lists: WSS-M97B44-D, VW TL 774-F, MB 325.3, MAN 324 Typ SNF. So if your manual names one of the shared codes, both makers claim it. If it names a code only one lists, only that product's maker claims it.
Motorcraft Orange Prediluted Antifreeze/Coolant vs PEAK ORIGINAL EQUIPMENT TECHNOLOGY Concentrate Antifreeze + Coolant for North American Vehicles - ORANGE
Listed chemistry: not published vs OAT. Form: Premix 50/50 vs Concentrate. Spec codes both makers list: GMW 3420. Only the first lists: WSS-M97B44-D2, GM 6277M. Only the second lists: WSS-M97B44-D, MS-7170, MS-9769, MS-12106, SAE J814. So if your manual names one of the shared codes, both makers claim it. If it names a code only one lists, only that product's maker claims it.
Which spec families the directory covers
Use this to judge how much published spec data exists for your vehicle's maker. Counts are products whose manufacturer lists at least one code in that family.
| Spec family | Products listing at least one code | Codes seen |
|---|---|---|
| Japan (JIS) | 29 | JIS K2234 |
| GM | 24 | GM 1825M, GM 1899M, GM 6277M, GMW 3420 |
| Ford | 23 | ESE-M97B44-A, WSS-M97B44-D, WSS-M97B44-D2, WSS-M97B51-A1, WSS-M97B55-A, WSS-M97B57-A1, WSS-M97B57-A1/2 |
| Chrysler / FCA / Stellantis | 21 | MS-12106, MS-7170, MS-9769 |
| Volkswagen Group | 20 | VW TL 774 (variant not stated), VW TL 774-C, VW TL 774-D, VW TL 774-F, VW TL 774-G, VW TL 774-J, VW TL 774-L |
| SAE | 18 | SAE J1034, SAE J1941, SAE J814 |
| British Standard | 17 | BS 6580 |
| MAN | 15 | MAN 324 Typ NF, MAN 324 Typ SNF, MAN 324 Typ Si-OAT, MAN List 3.3.7 |
| TMC (heavy-duty truck) | 14 | TMC RP-302A, TMC RP-302B, TMC RP-302C, TMC RP-329A, TMC RP-329B, TMC RP-338, TMC RP-338A, TMC RP-351, TMC RP-364 |
| Mercedes-Benz | 12 | MB 325.0, MB 325.3, MB 325.5, MB 325.6, MB 326.0, MB 326.5, MB 326.6 |
| Deutz | 10 | Deutz DQC CA-14, Deutz DQC CB-14, Deutz DQC CC-14 |
| Cummins | 9 | Cummins CES 14439, Cummins CES 14603 |
| US federal | 8 | US Fed. Spec A-A-870, US Fed. Spec A-A-870A |
| Detroit Diesel | 7 | Detroit Diesel 7SE298 |
| Other OEM / industry | 7 | JCB STD00088, Jenbacher TA 1000-0200, Liebherr LH-00-COL3A, Liebherr LH-01-COL3A, MWM TR 2091 |
| Navistar | 6 | Navistar CEMS B-1, Navistar MPAPS B-1 Type I, Navistar MPAPS B1 III, Navistar MPAPS B1 IIIA |
| MTU | 6 | MTU MTL 5048 |
| BMW / MINI | 5 | BMW LC-07, BMW LC-87, BMW N 600 69.0 |
| Volvo | 5 | Volvo 1286083, Volvo Cars TR-31854114-002 |
| Daimler Truck | 5 | Daimler Truck DTFR 29C100, Daimler Truck DTFR 29C110, Daimler Truck DTFR 29C120, Daimler Truck DTFR 29D110, Daimler Truck DTFR 29D120 |
| Hyundai / Kia | 4 | Hyundai/Kia MS591-08 |
| DAF | 4 | DAF MAT 74002 |
| Nissan | 3 | Nissan L25500P |
| Honda | 3 | Honda Type 2 |
| Caterpillar | 3 | CAT EC-1 |
| Opel / Vauxhall | 1 | Opel/Vauxhall B 040 0240 |
| John Deere | 1 | John Deere JDM H24 |
| Mazda | 1 | Mazda FL-22 |
| Tesla | 1 | Tesla G-48 |
A product can count in several families. Heavy-duty families (Cummins, CAT, Detroit Diesel, TMC and others) mostly come from heavy-duty and multi-purpose coolants.
When to see a mechanic
If two products you are comparing do not share the spec your manual names, do not mix them. A qualified mechanic can flush the system and refill it with the correct coolant. See can you mix coolant?
Frequently asked questions
Which coolant is best?
We do not rank products. The best coolant for your car is one that meets the spec in your owner's manual.
Can I compare more than four?
Four is the limit, to keep the table readable on phones. Use the directory filters to narrow the list first.
Why are some cells "not published"?
The manufacturer source we checked did not state that field. We never fill gaps with guesses.
Is my comparison saved?
Only in the link. Nothing is stored on our side.
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.