how much oil pressure for 3800 II

1995 Pontiac Bonneville SE 3.8L, what should the oil pressure be on this car? Mine reads about 40psi, it just seems low to me, but I've never driven a family car before, it could be fine, I just wanna make sure.

Hot, cold, idle, at speed? What weight oil?

The 95 should run 10-30... General oil pressure should be 30 Psi give or take a few at hot idle and 60 Psi @ 1850 iirc.. There will be variances in that.. The gauges aren't always accurate but will give you a general idea... To test the true oil pressure you would need to install a mechanical gauge..

All of my 3800's do 60-70 Psi at road speed, and 30-40 hot idle...

Thanks guys, ya, mine stays right around 40psi, at idle, & driving around, hot or cold. I have 10w40 in there now. I guess I'll just go ahead & replace it, instead of waiting for it to completly fail & cause problems down the road. I just had that pan off a few weeks ago, had I known it was bad, It would've been a perfect time to replace it.