So i am below on coolant on my 2008 mini. When i got it serviced a couple months back to fix an oil housing and coolant leak they put BMW coolant 82141467704 in. Now it is low and I just bought a bottle of pentofrost nf and wanted to know if i could mix this antifreeze in with the bmw one. Any help would be appreciated.
PS. BMW coolant should be blue right? it is a blue green tint in the tank right now? has it been diluted too much?

 

BMW coolant is blue, don't use green coolant.