: I remember going through a few posts on this a while back. I think there was a TSB from Nissan that said the redesigned fuel injectors for 93+ model years MAY be damaged by fuel injector/system cleaners. Do a search though I am not totally sure I am correct here. Look through my technical and general forum posts, I have posted on this a couple of times. : Hope this helps, : Mark
most of the major brand injectors are safe for both pintle (90-93) and pintle-less injectors (94+)