What kind of oil and how much?

So I really want to get into this oil pulling business and so I bought some Sesame Oil. I didn't realize, until I got home, that it doesn't say cold pressed, it says expeller pressed. Will this work. It says it is refined and organic. I tried some a but ago and it works great except I'm having a hard time supressing the need to swallow. Should I just use a but less? Any suggestions will be greatly appreciated.