Your product has not improved my issue with 6.0 liter powerstroke. My engine runs poorly until the engine oil gets up to +/-120 degrees. I have used other products to help the issue with the same result. I have used Hot Shots Sticktion , and Rev-X. I have also converted to Rotella T6 full synthetic. I Guess the only solution is to replace injectors.
Worth the Money
Have used this in both of my F-250 Super Dutys.
Had problems with winter driving before using Archoil.
Since I started using it I haven't had any trouble associated with those problems.
Received it on good time too.
Just changed oil about 1000 miles ago added in the archoil 9100 so far so good runs smoother and a little increase in fuel economy win win.