Originally Posted by floydarogers
It isn't politics so much as need: most of the US isn't cold enough to require higher cetane to help while starting. And after the engine is started, cetane appears to have little or no effect on mileage or power.
Colder climate is one reason why we have this fuel, but also Neste Oil claims that it actually increases power up to 4% compared to regular Neste diesel.
I my self have notised this in dyno: exactly same conditions (temperature +1 c, raining, same time of year, one year apart) with same engine map Pro Diesel gave 11hp and 5Nm more power than regular Neste Oil diesel.
One might say itīs only coincidence and never the conditions are exactly the same but for me anyway itīs a difference.