[aigel]

Mat:

You can also install all these gakets dry, especially on smaller area German-machined surfaces like these. If things are flat and clean and you use quality gaskets, no sealer should be needed. The factory used none, as far as I know.

If I use sealer (on the US made stuff with tin pans and covers etc.) I use high tack by permatex. It also stays soft like others mentioned above. I second not to use RTV anywhere on the flat six.

George