Thought to lean in on the expertise in the community. I have a 2016 Mercedes-Benz GLE350d, and recently got a notification saying to add coolant. After doing some digging around, I found this specification:
https://operatingfluids.mercedes-benz.com/sheet/320.1
which seems to point to this list of what seems to be the “pre-approved” coolants for most diesel engines in the list above
https://operatingfluids.mercedes-benz.com/sheet/326.6
I’m in Canada, and don’t see many of these brands around. But looking through them, it seems they’re just Si-OAT coolants. If I get some other Si-OAT 50/50 mix from a local auto store, would that work fine?
Here you go.
An OE manufacturing company based in Canada that also services the US
https://www.recochem.com/wp-content/uploads/2021/07/OEM-Coolant-EURO-I_USA_ENGLISH_Brochure.pdf