No problem mate. I wouldn't take it as gospel I'm only going from what I have read and seen from other people and recommendations :) But I was told the oil stuff that helps the pistons seal themselves and glide better, is what does the problems with the engine being built the way it is. But as I said before the oil with these should be changed long before anything nasty happens really I know it's the age of the oil that does most damage due to the friction. and because of what I have read never used it myself and won't just to be safe than sorry :)
I've used and know people who have used injector cleaner in 9 years I've never seen a problem with mine or heard of any coming from using it from other owners :)