Quote Originally Posted by eLai View Post
After several change oils, the leftover oil of approx .5L accumulated to 3.5L now.
Gagamitin mo ba ito?
Mix of Castrol, Petron, Shell
All premium (not synthetic )
no, they do not turn into engine-destroying evil oils, when mixed together.
the oils can be used against each other, mix and match style.
just be sure they all individually satisfy the engine's requirement specifications.