i was told i have
 

i was told i have a slight oil pan gasket leak what can i do to stop this with taking the motor loose and also around my value covers it has some wet spots of oil around them but my oil pressure not failing though my truck does fill like im smothered losing a lil power when driving it dont have the full power i had when i brought but the motor runs good check engine light stays on is this from the oil pan leak or catilac converter :(

how or when can you tell if you have to change
 

value cover gaskets oil pan gaskets i guess if i drop the pan to change the oil pan gasket i might as well change the pump or how can you tell if i should change the oil pump my motor starting to build up oil gunk on the bottom around the oil pan and blowing on to my transmission i guess from the wind while driving :o