Persistent Oil Leak: Cracked Ol Pan Or Failing Head Gasket?
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Thread: Persistent Oil Leak: Cracked Ol Pan Or Failing Head Gasket?

  1. #1
    ChevyTony is offline [OP]
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    Persistent Oil Leak: Cracked Ol Pan Or Failing Head Gasket?

    I keep having to add oil to my 2011 Chevy Cruze LTZ due to a persistent oil leak that keeps trying to run the oil tank dry. My garage mechanics noticed "a trickle" of oil coming out of my oil pan when they last checked my car a couple weeks ago. Do I have a cracked oil pan, or a failing head gasket?

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  3. #2
    Handbrake Released Jondaytona's Avatar
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    An oil leak won't be from a head gasket, but if a "mechanic" noticed an oil leak, why couldn't he tell you where it was coming from? A cracked oil pan is unlikely, but not impossible. Another tidbit, I bought a car from someone awhile back for a few hundred bucks because he thought the same thing. Couldn't really drive it because the oil leak was so bad and it was running down the pan. Once I got it home and checked it out, I couldn't believe my eyes when I noticed a small pinhole in an inconspicuous spot on the oil filter that would leak oil at a consistent rate that he thought was the oil pan. In my case it was a quick oil change that took care of the leak. Things aren't always what they seem (but usually are).

    I typically take a can of brake-clean and just hose down the area of leakage from top to bottom, then take an air nozzle and dry it all up real quick. Start the engine and watch for leaks.
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    Quote Originally Posted by Jondaytona View Post
    I typically take a can of brake-clean and just hose down the area of leakage from top to bottom, then take an air nozzle and dry it all up real quick. Start the engine and watch for leaks.
    This^^^

    Clean the old leaked and caked oil up and then start searching for the leak. Don't bother throwing parts at your car until you know where the leak is located.
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    My thoughts exactly ^^^ and ^^^^^^
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    I'll give you a third possibility that's more likely: A failed check valve in the intake manifold that's part of the PCV system. When that happens, the block is over pressurized from the turbo boost and oil leaks from all kinds of gaskets.

    See item #4 in this post. If that orange nub is gone, that's the source of your problem. As you can tell from the thread, it's a fairly common failure.
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