2003 Chevy Impala 3.8, 138k
I have an oil leak coming from the top of the engine and I’m trying to determine if it’s possible for oil to come from a bad intake manifold gasket or if only coolant can come from that? It’s definitely not the intake plenum gasket as there’s no oil around that.
It’s most likely the valve covers but I’m trying to do my due diligence and make sure oil can’t come from a bad intake manifold gasket.
(There’s is no coolant leaks btw)