Engine oil leaks should not be ignored. Oil leaks can leave greasy ugly stains on your driveway. But the real danger is potential engine damage or failure if your engine runs low on oil. An engine leak that has not been attended to properly will cause the engine to dry up and result in the internal temperature of the vehicle to increase. This will lead to the internal engine overheating and causing lots of damage to your engine, as well as putting your safety at risk.