I am a firm believer that all diesel engines benefit from a diesel fuel additive.
I have several diesel engines and every gallon is additized with John Deere diesel fuel conditioner, blended for them by Stanadyne.
It increases the cetane number, improves lubricity, demulsifies water, and stabilizes fuel for storage. The winter formula also helps prevent gelling. There are several different manufacturers/blends available, the one mentioned above is the one I'm familiar with.
We've had diesel engines in operation for over 40 years, never once had an injector problem, end I can't even remember the last time I have had a Water In Fuel light on, if ever, But at least 95% of our fuel is coming from our own bulk tanks, so its somewhat of a controlled environment.
No harm can be done additizing fuel, just choose one of the major companies. The summer formula I use, one pint treats 208 gallons of fuel, and cost is around $7 per pint. Less than 4 cents per gallon.