Quote Originally Posted by mazdamazda
What do I do with unused / leftover motor oils (less than a liter).

I have some Mobil1 (regular & synthetic) & Caltex (energy synthetic). Might not be using them again since I'll be switching to a higher viscosity oil (Castrol Magnatec 10W-40) from Caltex Energy (5W-30) for the 323.
Hindi ata pwedeng paghaluiin ang dalawang synthetic oils kung magkaibang klase ito. To be safe, it's better to give it to your friend, whose using a regular oil for, top up.