Diesel fuel additive such as Standyne

[dpam]

I have a 2017 GMC Denali diesel and I’m wondering if it’s a good idea to keep on adding a diesel additive such as standyne. I always added it to the 2011 GMC diesel that I used to have. I bought the 2017 a year ago and added standyne every 2nd fill, but now I wondering if i’m Wasting money by buying the additive because the service area of the dealership told me 2017 trucks don’t require a diesel additive. Appreciate your thoughts.