If the gasket is leaking, the exhaust gases break out, accompanied by a characteristic sound (“cut” collector)
Replacing the oil sump seal ZMZ-406
If an oil leak through the oil pan gasket cannot be eliminated by tightening its fastening bolts, it means that the gasket is severely deformed and must be replaced
Replacing the front crankshaft seal
A sign of the need to replace the front crankshaft oil seal is an oil leak through its edge