seen this.
it perfectly follows the ustaad prophecy - worn engines take heavy oil.
I think if we extend it to actual proven life of toyota engines - the oil recommendation will go to 60W100 then to something like 600 weight oil aka NLGI 00 grease, then in the end close to 500,000 kms - the recommendation would be to mix 2.5 kg grease and about a litre of kerosene.
The prophecy will be fulfilled.