I called my oil company again to follow up on the annual service they (should have) provided and they forwarded me to the manager. He tried to convince me of two things: 1) "No one ever died from carbon monoxide using oil heat" 2) "Oil heat does not produce carbon monoxide like natural gas does".
Yes, those are quotes.
I can't confirm #1. #2 is technically true since unburned natural gas is not the same as home heating oil. However, it seems as if he's either ill-informed or he's trying to pull one over on me.