Is it possible you'd get a slightly better range because of one less engine. Just wondering...
Yes, for the 737 that is the case.
If you look at the long range cruise tables at 10,000'. Fuel Flow is about 10% more for the 2 engine case.
Thanks @Potsie Weber!
What's the analog for a quad? Say a 747. Get's interesting ; would the adverse trim drag on a single engine failure be compensated by an additional symmetric engine shutdown. Only an academic question; doubt anyone's doing that.