Looks like black gunk under the engine block and bye the oil filter?

it has 150,xxx on it. and its a 2.0 engine think it will hurt the car anyone knows what it is?Looks like black gunk under the engine block and bye the oil filter?
Sludge, partially dried oil and dirt. nasty stuff, wont hurt your car at all. It is most likely from when they change the oil and filter oil drips and runs all over the bottom of the engine.Looks like black gunk under the engine block and bye the oil filter?
It is black gunk. Oil, grease,dirt all cooked onto your engine block.
Your valve cover gaskets could need changing or you may need to replace your PCV valve. That, of course, depends on exactly where your oil filter is located. Not knowing the make, model, or year of your vehicle makes this one kind of tough to answer.





I would more likely say it's the valve cover gaskets, because the oil seeps out and then gunks up over time. You could use some engine cleaner to clean your valve covers and then watch it daily to see if it's coming out of the PCV valve or the sides of the valve covers. However, the gunk could be stopping a leak and cleaning it could make it leak more. I once had a leaky power steering unit, but it got so gunked up that after a while it stopped leaking!





Changing your PCV valve is much easier than replacing the valve cover gaskets, so you could just go ahead and change it if you haven't done so already.





Are you having to add oil between changes? If not, and you never run low on oil, then it could just be a dirty engine. Do you live in or drive a lot in the country? It's not necessary to clean your engine block. The best thing you can do for your vehicle is change your oil as recommended for your particular engine and check it often. Synthetic oil costs more, but can help your engine last longer.
check your PCV valve. You probably need a new one.