I have used Techron in my 2015 Altima(as per dosage directions) with fine success.Nissan helpfully states:
"If any drivability problems such as engine stalling and hard hot starting are experienced after using oxygenate-blend fuels, immediately change to a non-oxygenate fuel or a fuel with a low blend of MTBE"
Right on, I'll just drive 20 miles to the nearest place that sells ethanol free gas. Yep.
On the same page as that, they also state:
"NISSAN does not recommend the use of any fuel additives (ie, fuel injector cleaner, octane booster, intake valve deposit cleaners, etc) which are sold commercially"
I guess using Chevron Techron on this NISSAN will destroy it as badly as using E15.