I only use 93. One of the cars has a JB4 (not the one with issues)
I have 2 other close friends with B58s all have the same oil and coolant usage issue, one had a top end rebuild under warranty, that one was my friends moms car so it was never abused in its life.
I know it’s just anectodal but for 5 engines to all have the same problems seems like more then chance.
Read the post. It wasn’t a comparison or even suggestion that they are identical. It was simply sharing of info regarding pricing and deals on a similar model. It is entirely up to the buyer whether he or anyone else wants to “settle” for a 740i.
I also had a choice between buying GLS 450 and 550. I
the 450 to be the best car I have ever owned. Happy I did not spend extra for the 550. I am sure others are others who prefer 550. This is why they sell different models.
Peace out