As title,
Does anyone ever use engine treatment/injector cleaner stuff ?
Is it safe to use on a Subaru or not / Is there any point in using it ?
What stuff do you use ?

Cheers
Marc.

 

IMO it has little effect...Probably won't do any harm though.

For a proper job, you should remove the injectors, then have them ultrasonically cleaned + flow tested.

Richard

 

i should imagine it would make more of difference on older cars as the injectors would have more carbon deposits on them.

i had my MY99 done at TSL when it was 4 years old, can't say it felt any better or worse to drive.

 

ive just ran in a tank of stp injector cleener additive. cant tell the diffirence either in fuel consumption or performance. thats on a 93 wrx with 60k on it.