oil the gasket on fagor duo pressure cooker?

I learned the hard way a long time ago, about adding the oil to beans/rice. I don't want to scare you, but let's just say I've had 'problems' with the foaming up!
Check YouTube-there are lot's of good demo/instruction about PCs. There is a learning curve, but once you get the hang of them-they are really useful.
Also, do a search at the upper left of this forum for PC info. They work well with induction cooking, (if stainless steel).