Well, one thing I like is you can’t over rev like a manual. Lol How many times you hear somebody downshifting and messing something up on manuals. Lol
First number is used upon start up. You always want the most thin for the start up temps so your motor and turbo can get oil sooner..... most turbo cars run 0w
You do realize the second number is what’s important when the oil is warm? The first one is when it’s cold....
If you want thicker oil, go with 0w40 that’s what the GTR run