Mobil 1 High Performance 15W-50 No Longer Made - What To Use?

[Brice Warnick]

For years I have used the red cap Mobil 1 High Performance 15W-50 that
was specifically formulated for turbo and high performance vehicles.
I wanted to do an oil change today and discovered that it is no longer
made.
Mobil 1 has a whole new line of products ith different kinds of extended
15,000, 7,500 and 5,000 etc.
I am perplexed at which one to use now.
I have heard that the 0W-30 is excellent.
What about the high mileage Mobil 1 oils?
What are most 200 20V owners using?