Actress Hailee Steinfeld pairs a navy-and-white dress with white strapped sandals at an event in Los Angeles in 2013.
If the oil is on the inside parts of the spark plug like the bottom insulator, that's a bigger issue, you have either leaking valve seals or very leaky piston rings. If your car blows a puff of blue smoke on startup, you probably ave leaky valve seals. If it blows blue smoke all the time, leaky piston rings.
At the base of the oil pan is a drain plug, accessible from the underside of your car. Worn out thread, misaligned threads, or a loose oil drain plug can be a common oil leak cause.Itâs easy to spot as there would be fresh oil around the plug, and on the side of it where it drips down. The Oil Filler Cap.hat Causes Oil Leaks. Oil leaks can be frustrating because they donât come from one place on a car. If you have an oil leak, youâre almost guaranteed a trip to a mechanic. All cars develop them, from minor leaks to slow drips that develop into a major threat to a vehicle.