While I picked a number in the poll in reality I tend to check based on experiance with any particular vehicle . New vicgilce gets checked fairly often until I feel comfortable it is ok. As they age I check more often when they may start to have an appetite for oil.
Comments
Do you check your oil "hot" (but after it's drained back into the pan for 5 or 10 minutes) or "cold", after the car has sat all night?
I generally check mine hot while pumping gas (with a short ~5 minute drain time).
The other option for poll I could think of is one maybe better not asked:
'I assume the Oil Life Monitor (perhaps incorrctly) will tell me when I need to add oil'
We have never owned a Honda that needed oil between changes so I've become lazy.
Still when I do check them they are always full.
On our 149,000 mile BMW, every month or so. It's always full too.