Only on very minor leaks, it makes the oil thicker and less able to seep through a gap.
GRAVITY.
The most common cause for occasional, small oil leaks is a worn seal or damaged gasket. The leaks are most visible when parked but occur constantly.
Look for oil spots on the ground where your car is parked. Generally at the oil pan or the differential box.
A loose, improperly aligned or worn-out oil filter are common causes of car oil leaks. A loose or improperly threaded drain plug could also cause an oil leak to occur.
No. Get rid of the car or replace the engine!
If at the back of the oil pan it is the rear main bearing seal - fairly expensive & always leaks after car is shut off. Otherwise basic reason is all oil in engine runns down to lowest point the oil pan
take vehicle to a car wash wash engine so no oil is left on it then you will be able to see where oil is leaking from when it leaks take vehicle to a car wash wash engine so no oil is left on it then you will be able to see where oil is leaking from when it leaks
Below oil level if it leaks with the engine off and on A oil cooler lin, filter, head gasket and so on if it only leaks when running
Have a look for slow oil leaks - the oil leaks then when the engine gets very hot the oil burns.
An oil leak is always going to be out of the engine as the engine contains oil and the car does not. I think you are saying you are loosing oil with no apparent leak. If that is the case the engine is burning oil and that is why you see no leaks.
Check for oil leaks on the Camry. Especially look for oil on the exhaust, as the smell can come into the car.