oil consumption on long journeys is very common, I have hardly seen / experienced any engine which does not, Toyotas do eat a little more oil than Hondas (not true for City aspire though). There is nothing to worry about, I suggest do not experiment at all on engines with these new brands of unspecified oils.
Stick to what company suggests, Incase of emergencies you can variate a little with the viscosity specifications. You try putting 10-60w in your Altis and it will be full of gunk in few km,s with all oil lines choked.