It did make mine run quieter and faster, but this was because I had not changed the fuel filter. I assumed the other owners had as there was a receit in the log book for one and also an oil filter. But I told the garage to show me the old filter so I guess the old filter had not been changed for over 60,000 miles. As this old filter was a different make from the one the previous owners had bought.

So if it does make your car feel better it is probably because you have not changed your filter for a long time.

Edited May 9, 20179 yr by v530anh
Grammar mistake -$*%*%;"!%

there is an audible difference between Shell and BP in my car and if I use supermarket its even louder, I get a small bump in mpg as well.  I normally always use vpower now and sometimes ill even add a bit of 2 stroke in to it.

With BP ultimate diesel and millers diesel ecomax im getting around 620 miles from a tank brim to brim in my st tdci

Jamie