Shell gas stations here in Canada claim to be "nitrogen enriched";
WHY SHOULD YOU USE SHELL NITROGEN ENRICHED GASOLINE?
It is the only gasoline that contains the patented and exclusive Shell Nitrogen Enriched Cleaning System
Extensively tested for more than half-million miles in various engines and vehicles
Actively cleans performance-robbing gunk from intake values and fuel injectors
Acts like a protective barrier to shield fuel injectors and intake valves against future gunk build up
Exceeds the stringent requirements of the world’s top automakers – Audi, BMW, General Motors, Honda, Toyota and Volkswagen – and is certified as a TOP TIER Detergent Gasoline
No other gasoline protects better!
I looked around, but I couldn't really find any conclusive tests on wether it actually had a cleaning and performance-enhancing effect.
Does it work as well as claimed?