https://bobistheoilguy.com/forums/threads/advice-gc-0w30-vs-m1-0w40-99-bmw-m3.138528/
^This is somewhat of a follow-up to the conversation being had there.
I've spent the past 2 days reading various things on here, reading things on other boards, and talking to friends who have the exact same car as me.
In all that reading and talking, I've yet to find an oil besides Brad Penn that no one seemed to have any complaints about whatsoever.
Some like M1 0w40 due to it's MB AMG approval and it being the right weight. Others don't like it because it made their M5x/S5x motors noisier. I read a few posts on here that mentioned that and I've got 2 friends that say the exact same thing.
Some like GC 0w30 and it is probably one of the internet's most highly touted oils. The only hate I've really heard about it is concerning folks not wanting to support BP in any shape, way, or form. I'm leaning toward the standpoint that, while it's a thick 30 weight, it's not thick enough for my application.
I've read the love and hate put towards Royal Purple.
I've read about Rotella T and T6.
AMSOIL, Redline, etc...
My brain is nearing the point of being fried.
I've learned a lot from this board in my time lurking and learned more thanks to the thread linked above and a couple pm's from some very knowledgeable people.
I've now returned full circle back to Brad Penn. I'm currently running their 20w50. I believe it's too thick. My mpg's have gone down slightly since making the change to it from whatever random 5w30 oil the car lot put in the car before I bought it.
Here's the specs on Brad Penn's 15w40, which I believe might be the right fit for my application:
^Based on those numbers, would M1 0w40, GC, Rotella, or any other oil in a Xw40 weight provide me with more protection?
Cost isn't a huge concern, but the other plus side to the Brad Penn is that I can get it for $60 a case.
Thanks again in advance for any/all responses and advice.
^This is somewhat of a follow-up to the conversation being had there.
I've spent the past 2 days reading various things on here, reading things on other boards, and talking to friends who have the exact same car as me.
In all that reading and talking, I've yet to find an oil besides Brad Penn that no one seemed to have any complaints about whatsoever.
Some like M1 0w40 due to it's MB AMG approval and it being the right weight. Others don't like it because it made their M5x/S5x motors noisier. I read a few posts on here that mentioned that and I've got 2 friends that say the exact same thing.
Some like GC 0w30 and it is probably one of the internet's most highly touted oils. The only hate I've really heard about it is concerning folks not wanting to support BP in any shape, way, or form. I'm leaning toward the standpoint that, while it's a thick 30 weight, it's not thick enough for my application.
I've read the love and hate put towards Royal Purple.
I've read about Rotella T and T6.
AMSOIL, Redline, etc...
My brain is nearing the point of being fried.
I've learned a lot from this board in my time lurking and learned more thanks to the thread linked above and a couple pm's from some very knowledgeable people.
I've now returned full circle back to Brad Penn. I'm currently running their 20w50. I believe it's too thick. My mpg's have gone down slightly since making the change to it from whatever random 5w30 oil the car lot put in the car before I bought it.
Here's the specs on Brad Penn's 15w40, which I believe might be the right fit for my application:

^Based on those numbers, would M1 0w40, GC, Rotella, or any other oil in a Xw40 weight provide me with more protection?
Cost isn't a huge concern, but the other plus side to the Brad Penn is that I can get it for $60 a case.
Thanks again in advance for any/all responses and advice.