Bosch recommend you don't used injector cleaner.......but I always give mine a dose on MOT day to help with the Italian tune for the emissions test and I've never had a problem doing so. I think as long as you don't use it regularly it'd be fine.....like I said, I only use it once a year.
Now you've serviced it take it for a spin and when it's warm/safe to do so nail it in 3rd and hold her there for a few seconds or so......
Now you've serviced it take it for a spin and when it's warm/safe to do so nail it in 3rd and hold her there for a few seconds or so......