Quote Originally Posted by hytan
Mazdamazda, My ride is an altis 1.6 3zz-fe. Im planning to get Mobil1 Supersyn 0w-40 or Castrol Syntec 5w-30. Dont know which of the two is better. Both will be Fully Synthetic in nature.

Which will you choose?
5w-30 a full synthetic? better check it out... it might be a semi-synth only.

if you want better gas consumption - i'd go with the 5w-30. i think that the zz series engine is designed to handle 5w-30 (unlike the az series).

but if you plan on keeping your ride for a LONG time, go with the mobil1 0w-40 (what am using right now). toyota shaw-ortigas uses that kind of full-synth oil.