K so heres the issue. my 1991 honda accord seems to have low oil pressure. AT idle on my mechanical gauge, I get 5-7. But when the cooling fan comes on the pressure rises to about 8psi. At 1000 rpms I get about 12psi. But today was 80F. When it was 90F out I had lower pressure and at 3000 rpms I had maybe 55-60psi.

Im running 10w30 right now should I step it up a grade or 2.

I checked the oil level and it was about half a quart overfilled, and there was air bubbles on the dip stick, should I drain some oil?

Or is it the bearings.