One of the most annoying issues that can happen to any car is a leaky front main seal. If you notice your car is making a sputtering sound, a lot of blue smoke coming from your engine, an unusual whining, squeaking, or hissing sound, it could be a sign of a front main seal leak. A little oil or coolant on your driveway or under your car might also be an indication of a leak. It's important to find and fix any leak quickly because an oil leak or coolant leak can cause other serious problems, like an engine fire.