Quick answer
Mercedes-Benz MB 325 and MB 326: Mercedes-Benz approves coolants by MB sheet number: 325.x sheets cover concentrates and 326.x sheets cover ready-mixed coolants. 12 products in our directory list it. Buy one that names the exact code from your manual.
Key takeaways
- 12 coolants in our data list this code.
- Match the exact code and suffix in your manual, not the colour.
- A listed code is the coolant maker's claim.
Confirm the specification in your owner’s manual before buying. Product examples are not a fitment guarantee.
On this page
What the code means
Mercedes-Benz approves coolants by MB sheet number: 325.x sheets cover concentrates and 326.x sheets cover ready-mixed coolants. Mercedes says MB 325.0/326.0 apply to cars built up to April 2014 and MB 325.6/326.6 to all vehicles, and that specs should not be mixed.
In our directory, 12 products from 6 brands (ACDelco, Castrol, Comma, Prestone, Shell, Zerex) list this code. Chemistries their makers state: Si-OAT (5), OAT (2), IAT (1). Forms: Concentrate (8), Concentrate and Premix 50/50 (1), Premix (ready to use) (1), Premix 50/50 (1).
For the make-by-make answer, see the make guide.
Products by code
| Code | Products listing it |
|---|---|
| MB 325.0 | 3 |
| MB 325.3 | 3 |
| MB 325.5 | 3 |
| MB 325.6 | 3 |
| MB 326.0 | 1 |
| MB 326.5 | 1 |
| MB 326.6 | 2 |
Codes with a letter or number suffix are different requirements. Buy the one your manual names, not the nearest neighbour.
Coolants whose maker lists it (12)
Each row is a product whose manufacturer lists this code on its own page or datasheet (data checked 22 Oct 2026). A listed code is the maker's claim; we have not tested the products. Products with a checked Amazon listing come first.
As an Amazon Associate I earn from qualifying purchases. Commissions never change which products we list or what the data says.
How to use this list
- Find the exact code in your owner's manual, service book or equipment documentation.
- Pick a product above that lists the same code, including any letter or suffix.
- Open the product page to read the maker's exact wording ("approved", "meets" or "suitable for" are not the same).
- Do not mix chemistries. Check with the mixing checker before topping up.
Related spec codes
Chrysler MS-7170 · GM 1825M and GM 1899M · Ford WSS-M97B51-A1 (Gold) · Ford ESE-M97B44-A · Ford WSS-M97B57 (Yellow) and WSS-M97B55-A · VW TL 774 (G11, G12, G12+, G12++, G13, G12evo) · All coolant specs
Frequently asked questions
Which coolants meet MB 325/326?
In our directory, 12 products list it, including Prestone MAX All Vehicles Antifreeze + Coolant, Prestone Platinum All Vehicles Antifreeze + Coolant, Zerex G40 Antifreeze Coolant. The full list is on this page.
Can I use a universal coolant instead of MB 325/326?
Only if the maker of that universal coolant lists this exact code on the label or datasheet. "Compatible with all makes" is not the same as listing the code.
Where do I find the MB 325/326 requirement?
In the owner's manual or service literature, usually in the fluids or capacities section, and sometimes on the reservoir cap.
How we source this page
- Facts come from manufacturer pages, datasheets, owner's manuals and standards bodies, linked under Sources.
- We do not test products, and no brand pays to be listed or ranked. Advertising and affiliate links are labelled and never change the data.
- Anything we could not find is marked "not published" rather than guessed. Spotted an error? Tell us.
Sources
- Prestone: Prestone MAX All Vehicles Antifreeze + Coolant (manufacturer page)
- Prestone: Prestone Platinum All Vehicles Antifreeze + Coolant (manufacturer page)
- Zerex: Zerex G40 Antifreeze Coolant (manufacturer page)
- Shell: Shell Coolant Longlife Plus Concentrate (manufacturer page)
- Shell: Shell Coolant Longlife Plus Ready to Use (manufacturer page)
- ACDelco: ACDelco DEX-COOL Extended Life Coolant (Australia/NZ) (manufacturer page)
- Castrol: Castrol Radicool NF (manufacturer page)
- Castrol: Castrol Radicool Si-OAT (manufacturer page)