How can I tell if I blew a head gasket?

Hello everyone,

I have a question…

I changed my oil over the weekend and noticed a chocolatey mix on top of the oil in the drain pan. Additionally, my antifreeze needed topping off, and there was a lot of slime on the dipstick and oil cap.

I suspect I may have blown the head gasket. How difficult is it to replace a head gasket, and what steps should I take to ensure it’s done correctly?

It is surprising since the car only has 72K miles on it.

Thanks, everyone!


Can’t be sure if its a problem with the head gasket. But it is very costly to do a replacement. Recently the dealership I work for replaced the head gasket of a 4.6L V8 Mercedes at approximately > $1000


You can tell if you have blown your head gasket when the engine is overheating actually this is the most common sign of a blown head gasket. The head gasket helps to seal the coolant passages in the engine block and cylinder head. If it fails, coolant can leak into the combustion chambers, which can cause the engine to overheat also examine under the oil filler cap, please. The interior of the oil cap should be mostly dry if the gasket is undamaged. Should you find something that resembles a milkshake in thickness something milky, brownish yellow you most likely have a gasket leak.

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When it’s really bad, a small stream of water may come out of your exhaust. It’s perfectly normal to experience a few drops or a little sprinkle. I have noticed that H2O is actually a byproduct of the emission system. When it’s really bad, water will come from your engine when you park.

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Signs of a blown head gasket include white smoke from the exhaust, milky oil, overheating, coolant loss without visible leaks, and engine misfires. You might also notice bubbles in the radiator or coolant overflow tank, indicating combustion gases in the coolant.