If you have gas in your oil means you are "washing" your rings out and fuel is getting past them. If you are driving the car that rich I think you would know IE lots of pretty black smoke and run like complete ass. You could have a leaky injector that drips when the car is off. You can put a fuel pressure gauge on you car run it for about 10 seconds then shut it off and watch the gauge it should hold PSI if it doesnt then you have a leak somewhere.

 

every car i have worked on when i smell the oil it smells like mine lol