Antifreeze PEAK or OEM BMW

I used genuine bmw coolant as the price was around the same.

I bought peak global lifetime 50/50 pre diluted antifreeze & coolant. The ingredient list matches the HD one. I believe that is what they use it is just colored differently. I checked with my dealer and they said it is perfectly fine to use.

BMW coolant is down right awesome stuff.

I've been using it for years and it works fine.

i use regular peak coolant (prediluted). it works fine.

I've used Peak OET Blue in both Hondas and a Toyota for years...last time I got it, was 17 a gallon

i use regular peak coolant, works fine

I run the Peak Final Charge Global red coolant. Less corrosive than the green stuff, and I haven’t had any issues running it.

you can use peak, most likely it will be fine, it may just cause your radiator and heater core to clog. i used to run it with absolutely no problems. i now just prefer g11/g12

So you don't mix coolants. BMW coolant uses embedded teflon or something. Dump in the wrong coolant and you have to run (I kid you not) laundry detergent through the entire system several times, flush the shit out of it several times then replace every single rubber hose.