Does anyone use an additive on a regular basis. After reading up on the pros & cons of direct injection engines, it seems this should be added to the maintenance list - maybe every 10k miles. Thoughts?

 

Most premium gas ie shell and chevron already have cleaners added. Adding additional will not cause an issue.

 

I have considered this but don't think it's a huge priority. That said I don't think it could hurt. I've watched somewhat closely and haven't really read / heard any reports of injector clogging or carbon buildup on p400 or p300 motors from JLR (or the 5.0 v8 motors). Perhaps dump in a bottle of Techron or B12 or Lucas Cleaner every oil change (PS - also pretty sure my dealership does this so they can charge $240 and have $8 cost).

Seems like one thing JLR did do correctly in the past 10-15 years (direct injection starting in 2010 I believe) is not having a carbon buildup problem. By contrast, early Audi and BMW direct injection motors needed walnut blasting and intake cleaning shockingly frequently. All of those poor original RS4 and 335i owners lol.