Sump gasket sealant help

[dowsett]

Few questions as im about to tackle this at the weekend.

I would like to know if sealant is required to replacing a sump gasket. Ive read some who do and some who dont.....

If i do use a sealer, how long do i have to wait before i can put oil back in the engine and get it off the ramps? everywhere i read its 24 hrs... i dont want the car on the ramps over night.

I own a Mondeo ST220.

Any tips / advice?

Thanks