Oil pan gasket replacement - added oil too soon?

[sexobon]

Taking the car up to highway operating temperature throughout is preventive maintenance (PM), not a repair procedure. It more thoroughly evaporates moisture buildup than low speed driving can. Do that regularly so you won't have to go out on an open road and do much light braking to remove rust; unless, you just enjoy that sort of thing. Covering wheels is a PM adjunct for rain; but, not humidity unless they're sealed with desiccant inside. Taking the car out for a short highway cruises as necessary will reduce moisture that causes rust buildup so your normal low speed driving and braking will remove what little rust occurs. An ounce of prevention is still worth a pound of cure.