I use 1g/ml as an approximation for the density of crude all the time, and it’s pretty clear that I’m not alone on that one.

Crude floats on water, so it’s also clear that this is an approximation.

I’ve got 0.96 to 0.98g/ml in my head, and wondered if anyone had more solid data.

or I could just ask the all knowing one… which suggests 1.0g/ml isn’t bad at all.