Al,
Not sure about the warming up, I think it may run out better when warm (oils a bit thinner). When you remove the drain plug, watch out, it's gonna shoot forward initially so have the pan ready to catch it and then move it back as the stream dies down. Oil filler cap,(I guess you could call it that) looks like a big screw head, chrome and has a slot running down the center, located on right top side of engine case. I did mine the first time last week and it's pretty straight forward and easy. Hope that helps.
