Antifreeze Pentosin or Prestone

Prestone coolant. That's extremely good.

I run the prestone green coolant in my e36 since 2006 and my 540i/6 since 2008. They're both fine. The old engine still looked & ran great. The radiator in my 540i was still from 1998 until very recently when I did a cooling system refresh - entirely preventive.

Prestone teal colored euro coolant has never failed me.

I've always used the Pentosin equivalent in all my Volkswagens and Audis. Pentosin E/SF. Pentosin SF is G12 (pink) -2005, Pentosin E is G13 (violet) 2006 onwards. Safe to mix with factory fill, of course can always go to the dealer for coolant too. These are concentrate, so you do have to mix 50/50 with distilled water though

If it's inconvenient to go to the dealer, you can buy the correct coolant at NAPA, they carry Pentosin brand chemicals.

I use the Prestone 50/50 Prediluted coolant which states “guaranteed for all vehicles American/Asian/European” on the label. It is yellow/green. Zero issues because it matches the specs in the manual.

I use Prestone teal European car formula. No problems yet

OE BMW coolant should be your first choice, and if it can’t be, second would be another reputable coolant maker that offers a European vehicle variant. For example, Prestone makes a blue in color variant formulated for use in euro cars. I’ve used both, never had an issue with either.

I use the orange dexcool stuff found at most auto parts stores. I think it's prestone, but I don't remember

Prestone destroyed my passats Cooling system, everything just deteriorated, the hoses in my car started to break up. I don't recommend prestone