My first vehicle was a 1980 mazda b2000 truck that my dad bought for me while I was attending university, the first time away from home. I was living in Edmonton (very cold climate).
This truck used a fair amount of oil, but I always checked every second fuel fill or so. Mostly this vehicle was used for trips of 1 mile or less at -30, for months at a time.
Anyhow, the trip from edmonton to home at christmas time was 5 hours. I checked the oil before I left edmonton, and it was maybe down 1/2 quart. Being young and stupid, I didn't add any. When I got home, my dad checked the oil (maybe within hours of my pulling up). It was off the dipstick, and took 2 quarts to fill. When deciding whether he wanted to skin me alive, I swore I checked the oil before I left town 5 hours ago.
He figured out that there was likely so much fuel dilution/condensation etc in the oil from multiple 1 mile trips at -30 that the actual oil blowby had been masked by fuel/water in the oil. I had often wondered how the little mazda managed to crank over at -35 with the 20w-50 that was in the sump. Anyhow, it seems like the 5 hours at full operating temp was enough to burn off all the liquid in the sump that wasn't engine oil. The result was that after 300 miles at 60 mph, there was only 1/2 of a sump worth of oil in the engine. (That was the theory that saved me from a blasting from dear old dad...a maintenance fanatic).
In more recent years, I am able to buy newer vehicles that are in good operating condition. On average, each one of our 3 daily drivers uses about 1/4 quart in around 5k miles. We could really get by without topping up between oil changes. However, I love taking the time to check the oil while filling the gas tank. The car I have in mind to replace my two door car has no dipstick, but instead you have to access the oil level through the dash computer.....I really hate the thought of this feature!