Where do you hide the extra key!!??
Maybe the neighbor is drag racing at night!!??
I would look for a new oil leak.
A valve cover etc...
My nephew had a Chevy V-8 that never smoked, but used lots of oil.
It was blowing it out the exhaust in droplets!!
We only found it out because I held a cardboard box over the exhaust and had him rev it up.
The exhaust painted the box with oil, but, no smoke!!