Seems like every other month this topic comes up. I agree with Hotrod John, if it will help you sleep better run the additive. I run Lucas or power service with every tank of diesel, does it help? How would I know? But I know my injectors are still working after 200k miles, hauling lumber, towing dump trailers and a mini excavator/bobcat once a week. I do it for piece of mind. Run the additive! It's like over building something. People go, "isn't that over doing it?" You'll never know if it's over done, but you always know when it's not. Go the extra mile, can't hurt.
