Originally Posted by parapaul
Just to piss on your parade quickly... V-Power absolutely has a HIGHER calorific value than fuelsave diesel, and a HIGHER cetane rating. Somewhere on another forum, a couple of years back, I posted the data sheet from Shell with all the figures on. linky
Dont confuse vpower diesel with petrol
The diesel is a GTL fuel blend which has a lower density than the a crude alternative. Slightly less energy per unit but initially a higher ignition point.
However fuelsave came along with a higher average cetane rating and higher energy per unit.