I would trade it in before the motor explodes. I was at my local Caddy dealer yesterday, they have 5 escalades completely taken apart. Bumper off, motors out, waiting on parts.
This discussion has gone stupid. Amazon has the M1 supercar oil. They did raise their prices 15% last night, but the oil is readily available. If not, Amsoil 0W-40 is readily available too.
It's NOT "thicker oil is better". It's the crank clearances are too big, completely out of spec. and the heavier oil takes up the slop.
It's very simple math. Heavier oil takes up .001 of bearing slop. It's a solution to the problem.
The question is: do you use this Super Car oil in all LS motors now?? The M1 webpage states "backwards compatible".
I have a few LS motors. LSA, LT4, L something in my work truck. I am considering this new oil now..