One day we were going to the city with my mom and stopped at an Aral gas station and they had this enhanced diesel for quiet engine operation. That was the only time I can safely say that the fuel was really doing what it was supposed to. Damn van was super quiet (well for a 1970s 4 cylinder diesel anyway), until the fuel filter clogged up because the additives in the new fuel dislodged all the grime from the years of bio diesel.
Pros: super quiet engine operation
Cons: fuel filter clogged up
Vehicle:
Ford Transit
