Its simple grammar really and reading comprehension. Or maybe on the flip side, knowing how to write something clearly. It says for m cars, option 1, tws 10w60 OR (meaning option 2) any ll1 oil and so on. So you can use mobil1 0w and still claim your warranty.
The other problem i see is this ... 60 is too thick when the engine is cold but when warm is good. On the otherhand, 40 is good when cold but does it get too thin when hot (track days)? Thats where it is an unknown for me.
Excuse my grammar as im on the phone app
