Sealants & Fitting Preparations

[awolff280sl]

Do any of these fittings require any special compound or prep to ensure a leakproof seal:
1) High pressure steering hose flare fitting?
2) Oil cooler hose?

Also, what is the preparation for the front crankcase seal prior to insertion?

Thanks

[awolff280sl]

Do the front pan bolts need to be loosened to insert the seal? If so, do you just cross your fingers that you don't create a leak?