42,000+ Jerry
It's not too common, but it has been reported a few times. It seemed to be more prevalent up through 2010 than with more recent production years.
Oil leaks usually look a lot worse than they are, in terms of volume. Oil will try to spread to a layer a molecule or two thick, so a little goes a long way. It would be surprising if an oil leak at the sender lost a vast quantity...unless the sender actually broke off. The "LOW OIL" warning means low oil pressure, not low oil level. It is not surprising that your level is still OK.
:roflblack: Back in the days when I was in college I had a '54 Chevy with a leaky rear seal. It would lose a gallon or two of oil a week commuting up a big hill to school, between what it burned and what it leaked. I worked at a gas station, so I either used re-refined oil at 10 cents a gallon, or scavenged the drainage from the cans we used for oil changes to get me by. That stuff didn't even have a uniform viscosity rating, much less additives or synthetic anything. BTW, that old six banger didn't even have an oil filter...they were optional back then. Thanks for the memories.
sometime in the middle part of the last century When I was first in college, I had an almost worn out little 2 door import car. The thing developed an over-active oil pump and woul blow oil out of the dip stick tube. I couldn't afford to fix it, so I took a couple of hose clamps and a section of old garden hose and attached the hose to the dip stick tub and to a hole I drilled in the oil cap. I no longer had oil blowing out of the engine, it just re-routed itself back into the engine. I drove it like that for about two years--maybe 25,000 miles. The car finally committed suicide when the engine froze up completely. Maybe I should have studied auto mechanics instead of statistics....
