engine oil

5w 40 or 10w-30 dependant on the temp range you intend to run it at eg lighter oil in the winter and heavier in the summer. for the 2zz-ge engine it woould not be good if you were using more than say a pint every 3000 to 4000 miles. remember with all those gizmos movinge reall fast in the VVt system its crucial that servicing is regular.

use what the owners manual says. i suggest mobil full synthetic of the recommended weight.

If ya dont know,say ya dont know..the original post did not ask for a brand recomendation...and i suspect that the car did not have the owners manuals when it was purchased and that might be why it was posted..so in all not a very useful post.