Well, I found the 0W30 SL Mobil 1 at K-Mart for a "clearance price" of $4.76, regularly $5.29 per qt. Way too high on either price, but nonetheless, I bought 10 quarts to get me through the next three oil changes. The K-Mart crew said they did not believe they would continue stocking the 0W30 after it sold out, even though Mobil is still producing it as an SM oil.
My plan is to use 2 quarts of GC 05 and thin it out just a bit with 2.3 quarts of the Mobil 1 0W30. Buster swears Nissan V6s love a thick 30 weight oil, but for some reason, no one told my engine that while it was being assembled, hence it likes the 10.0 to 11.0 csts.