Yes, gaskets do go bad on oil pans, I have had this happen to me on a ram van 250. It's a somewhat hard task to replace it, so i would take it to a local dealer or shop.
NO IT IS MADE OUT OF ALUUME
coolant no were near the oil pump/pan. because if mix that it will stuff up your radioator and blow your engine up. radiotors arent CHEAP!!!!!!!!!!!!!! Coolant won't get in oil pan froma water pump but it can from bad intake gaskets, head gaskets or a cracked head.
Remove oil from pan or go for an oil change. Too much oil can blow out the gaskets.
They don't go bad. Either it maintains vac or it does not. If not, just replace gaskets.
all oil pans go to 10 ft lbs.
If you mean the coolant overflow reservoir, it may be oil. You may also see foam on oil fill cap which would be coolant in oil. Have found out that GM used plastic gaskets for the intake manifolds on 3.1L V6 engines and they have a history of going bad. Get it checked if you have a trustworthy mechanic. I let mine go and ended up having the engine bearings go bad.
Yes they do at the intake manifold gaskets.
Sometimes, when head gaskets go bad, the coolant will be burnt off out of the exhaust system. That may not be noticeable at all.
The seals go on first, then the tabs on the ends of the gaskets lay in the channels molded into the seals. A little dab of RTV sealant on each corner helps to avoid leaks.
A crankshaft sensor can go bad if due to an oil leak. If oil breaches the sensor itself it will burn out.
The lower intake manifold gaskets on 3800 engines are likely to go bad at around 80,000 miles. This is caused from the gaskets being made with rubber and being eaten away by the "So-Called Dexcool" coolant. It is best to replace this gasket as well as the upper plenum gasket with a metal gaskets and change from dexcool coolant to regular antifreeze. This is an expensive repair...so be prepared.
tht intake manifold gaskets go bad on the 3.1! they have revised gakets to take care of problem, there has been an issue with the 3.1 gaskets for sometime and GM doesnt care! the dex-cool colant seems to eat up the gaskets.