What oil to put in that thing?

[Fab-Miami]

Hey guys,

I'm kind of new in boating. I own a Chris Craft express cruiser 2000.

I see I'm missing oil (fluid?) in that thing. The other one next to it is way more full.

What should I put in that?.... And what is it for?

Thanks,
FAB

 

[StingrayMike]

It looks like it is your outdrive trim pump and reservoir.
there should be marks on the side for indicating full and low levels
you would be for trim/tilt for your outdrive.

 

[bruceb58]

It is supposed to be power steering fluid but looks like they have ATF in that reservoir.

 

[Scott Danforth]

Atf, 30 wt oil, hydraulic fluid all work. Depending on year, different oils were recommended