S-10 4.3L Intake gasket issues

Hi,
I understand that the 4.3L engines in the S-10s suck as my 1998 are famous for going through intake gaskets. This can apparently let coolant seep into
the oil. Can anyone give me more information on this issue, and if these engines are prone to such problems? I have noted traces of glycol and elevated Na/K levels in oil analyses. How difficult is it to replace these gaskets? Why would an intake gasket allow coolant into the oil? It seems to me that an intake gasket should seal the intake manifold to the intake ports on the engine block/head.
Any info would be really appreicated. Thanks very much,
JMH
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For one, they don't suck. They are strong, long lasting engines. However, they are know to blow OEM head gaskets (cannot recall seeing a problem with FelPro gaskets, intake or head). Replacing the intake gasket is very straight if you have engine knowledge. The head gaskets on the otherhand are a you know what. It is nearly impossible to unbolt the fuel lines on the drivers side, and the A/C core and other parts block the passengers side. Be sure to mark the distributor when removing it. Also note, the oil pump will usually move, so you will probably need to adjust it before replacing the distributor (will need a long wide screwdriver). -- 98 Camaro

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Maybe 2-3 hours to clean and replace the gaskets. Did mine when I noticed some coolant seepage on the drivers side, but now think it was just running back from the thermo housing area, it's leaking...... AGAIN No idea why the intakes might leak. Have they been changed before? Could also a head gasket passing a bit of coolant
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