On a Toyota truck forum 4 owners with over 400,000 miles on the 22R engine without an overhaul have used the following oils:
Owner 1. Havoline 10W-40
Owner 2. Chevron Delo 400 15W-40
Owner 3. Mobil 1 10W-30
Owner 4. Whatever major oil co brand dino oil was on sale at Kmart or Wal mart
So these results tell us a wide range of oil brands, types and weights will work.