An old gasket that needs to be replaced.
An oil leak.
HEadgasket failure, internal oil cooler leak.
A vehicle that emits blue exhaust is experiencing an oil leak that has seeped past the engine seals and started to burn with the fuel. It indicates either a blown head gasket or an engine oil leak.
Casket will age under its walking enviroment. This causes the engine to leak oil.
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.
Removing the oil cap with the engine running causes a vacuum leak in the positive crankcase ventilation. This causes too much air to enter the cylinders at once, which results in a stalling engine.
The engine turns off when the oil cap is removed because the engine is designed to do so. When the oil cap is removed a vacuum leak is created which causes the engine to turn off.
a leak in a line or hose it depends is it what part of the engine it is or the type of car and type of engine call a mechaine
Valve cover Oil sending unit Oil filter gasket
engine oil leak
an oil leak
If you have an engine oil leak on your 2002 Peugeot 206 1.4, you can use an oil stop-leak product to fix it.