@mwklein [WI] @Ob’i-Hahn [WI] 🏴‍☠️ You lower engine compression as is to reduce nitrogen oxides and as a result suffer lower power and fuel economy, and what does shell do? Add more nitrogen so you'll have bad NOx results in spite of shitty performance and expensive catalytic converters. The atmosphere is already 80% nitrogen, this is NOT what is needed.