Ok i know tons of new owners post questions but i am just looking for some feedback on a few things. I have a 2004 dodge quad cab 4x4 hemi automatic 99k. I've owned for about a week now and have noticed a few things that are concerning me. The truck was a little low on oil when i bought it but not to fill line, so today i went to top it off but i'll be changing oil soon. pulled off the oil fill cap and noticed what looks like rust all on the inside of the cap? Could this just be oil residue? i also noticed what appeared to be moisture on the inside of the cap. should i pull the valve cover? secondly I've noticed a small leak coming from the bottom driver side of the radiator. can the seal between the plastic and aluminum be replaced? should i try and press it back together? Besides that truck is super clean and has been well cared for. I'm the second owner. love the truck and am meticulous about maintenance. the oil cap has me worried at the moment. thanks to all