It is good people are coming out of "mota haail" mentality. Mobil 1 5W-30 or LM Synthetic 5W-30 with B1 rated oils are perfect for 1GD engine.
People do not understand that these engines are not designed for Heavy Duty truck mineral based 20W-50 or 15W-40 oils. These engines are robust. They can work or even run may be beyond 200,000 kms using 20W-50 or 15W-40 truch oils but you will never be able to get the power and efficiency which these engines are designed to deliver.
Newer Revos and Fortuners have catalytic converters as well. The old school truck type oils contain additives which are killer for the catalytic converters.
I am also using Mobil 1 0W-40 for both my vigo and fortuner with excellent results. Another unexpected advantage is that you can increase your oil change intervals too.