From experience I would say yes
Check your head gasket. In addition, if your head gasket is bad or in need of replacing have your heads check for any cracks in them.
By replacing the whole gasket.
Yes there are sealers out there that can be used to seal or repair the gasket
Your cylinder head gasket needs replacing.
what are the signs for replacing the oil gasket in a 1996 Chevy cavalier
There is not gasket between the engine block and the oil pan. A sealant was used to join the two. If you are leaking oil from the pan you might try checking the bolts and making sure they are snug. If they are snug and it still leaks get tube of gasket maker to reseal it. Be sure to get all the old sealant off the pan and the block before you reapply. If the pan is leaking, you MUST remove the pan and install a gasket. Usually cork. I know of no mechanic that has had luck just using the sealant that a manufacturer uses. That is why Oil Pan gaskets are available for just about any car out there.
I believe that if a gasket is employed, then the need for gasket seal in a tube is gone, however, your gasket should be torqued to manufacturer's specifications. Yet, it doesn't hurt to have both.
Probably your cam cover gasket (top of engine)leaking into the wells. You can use sealant instead of gasket
new o-rings coated with A/C PAG oil
Only in the corners.
The head gasket is gone and water or coolant has mixed with the engine oil. Replacing the head gasket is no big deal.
I just went through this problem myself and what happens is that because of a poor design flaw the crankshaft position sensor air gap that connects to the oil pan goes out of spec if you put a gasket on oil pan or apply too much sealant. Remove oil pan eliminate gasket and just use sealant as that was what they originally did at the Chevy dealer and I put a gasket on the pan thinking they left it off and then had the problem you are having Exact same thing happened to me. This is correct. I want to add that I am almost certain that there is a difference in thickness between the gasket for the 4 cylinder and the 3 cylinder. I removed the gasket and went with sealant only and that resolved the problem.