hindi talaga masunod ang nakalagay sa engine or hood kc its would differ from climate of one country to the other..
Philippine conditions are still far from the worst possible conditions which vehicles are tested for. Even environmental conditions in Australia or the Mid-East can get harsher than what we have locally and traffic conditions in other developing countries make EDSA seem like an expressway. So always take what the dealer says with a grain of salt. Keep in mind that more frequent intervals gives them more income, so they will do almost anything to push increased service intervals. Don't worry, this doesn't only happen in the Philippines, even in the U.S. this problem is rampant. Car and Driver magazine always has to adjust its 'cost of ownership' computations on their long term test vehicles because dealers keep charging them for unecessary services on their test cars.

They already wrote an article on the matter. They compared the dealers' service schedule vs. the manufacturers' and the boy was the difference huge. Other dealer tactics included in the article included pushing uber expensive lubricants (way beyond manufacturer recommended) and pushing non-recommended additives.

When there is a disparity between dealer recommended and manufacturer recommended (check manual), always follow manufacturer recommended. I guess it'll be up to you if you want to follow general, specialized [e.g. European or GCC market] or the severe service schedule. Just make sure it is the manufacturer recommended schedule. Not the dealer [trying to make his wallet fat] schedule.