PS pump replacement
due to bearing
Join Date: Apr 2010
Location: I would rather not say
I personally don't believe that fuel additives work in the sense they give power hike. if there is one that i think is good, not because it gives a power boost but cleans the engine its BG44K. After i tried it, the EGR became sticky but it could be result of excessive soot maybe caused by the clean up...but only speculating.
the most effective in my opinion is going for a terraclean treatment. it might be costly and lengthy but in the long run it seems to show it improves emissions, mpg and if it cleans out the DPF, EGR and valve seals then you will get a increase in power but nothing more than what the engine is configured for.
if like me, you've done 100k+ miles and drive a diesel then its best to try it. once i get a job i will book mine in for one.