Shell V-Power Nitro+
As stated on Shell Canada FAQ page:
"9. What is the nature of the new BMW relationship and why do they endorse Shell V-Power NiTRO+?*
In 2015, Shell and BMW announced an exciting new relationship. In its endorsement, BMW recommends that Shell V-Power NiTRO+ Premium Gasoline for the BMW M class vehicle to get the best performance out of their vehicle. Shell V-Power NiTRO+ Premium Gasoline is the only premium fuel recommended by BMW M."
https://www.shell.ca/en_ca/motorists...plus-faqs.html