I plan to remove the lower intake of my Lumina 3.1L V6 engine, and seal the ridges between the two cylinder heads to stop oil/coolant leakages.
I'd like to know which is better sealing material, RTV silicon gasket sealant or cork-type sheet do-it-yourself gasket available at stores such as AutoZone?
If cork-type sheet is better, can I layer them to make the thickness of gap between lower intake ridge and engine block? Thank you for your replies!!