Algodoo

you are trying to pump the fluid between the gears
that is NOT how a hydraulic pump works
the fluid should travel around the outside of the gears
rebuild your pump
you will still fight with the compressability of the fluid but it will work
MUCH better

normally the pump would run in reverse of what mine is running, and oil would go around the outside of the gears, then the gears would mesh well in the center to not allow fluid to come back through, correct? In that case I'm not sure if that would work in algodoo, because I don't think the gears would mesh properly, and it would start pumping in reverse, similar to how mine pumps.

Animator: you can fake it by putting an invisible block between the gears that blocks the backflow

thanks, I'll try that