Mobil 1 is the correct oil and 5W-20 is now the recommended weight, use 5W-20. Some time back, Mobil 1 realigned their weights and Mobil 1 0W-30 is no longer in their product line-up. I usually find it at Wal-Mart and get the 5 quart jugs.
Edit - Oops, I see that Mobil 1 now offers Mobil 1 Racing Oil in 0W-30; however, use the 5W-20.
When I called Pat Trap I was told to use Mobil 1 0W-20 and no other. Wal-Mart and Advance Auto Parts carries it. ATF has many ingredients to suit the needs of an automatic transmission and may cause leaks or valves to stick when used in a Pat Trap. I suggest if you are using ATF, flush the system and replace with Mobil 1 0W-20.