So now that I'm at the 3000 mile mark, I decided it's time to change the oil. I managed to drain it but it was messy! Nice new oil spot in the garage... And I got confused with the parts. The spring came out right away, of course, but after mostly all the oil was drained I thought, hey, isn't there supposed to be a mesh filter in here? And lo, fishing around in there with my finger I first found a washer, and then behind that, the filter which I had to turn many times to get out. (I'd expected everything to just come right out with the plug/cap.)
Now the question is, do I have the order right? The washer has me confused. I'm assuming the washer has to be first, followed by the filter, spring and cap. Is that right? (See attached image for disassembled parts.)
Also it's okay to just leave it all open and draining overnight, right?
p.s. Thanks to Carter for the oil type advice! [Note to others: 15W-40, API SM, is just fine, and it can say 'diesel' on the container.]