Okay guys, I'm a little embarrassed about asking this question, but here goes. When ever I've replace a cork or composite gasket on a vehicle or pump part I've always smeared both sides with gasket compound. A co-worker told me that you don't have to do that. Have I been doing it wrong all these years? So what do you say? Compound or no compound? If you use a gasket compound, what kind to you use? (I use Permatex #2). And yes, I often use silicone instead of any gasket at all..depending on part.