Thanks for all of the advice. I have attempted to change the oil. I was going to try putting a pan under and draining it, then maybe a banjo bolt. See photo
of the oil pan, there is absolutely no room (see photo). My arm became stuck when I was reaching around down there for the oil drain plug, and were the engine not so dirty and oily, maybe I would still be there.
I tried taking off the oil filter
(which in itself was more difficult than it should have been), and I tried sucking the oil out of both of the tubes that go to the oil filter
(it's not mounted on the block).
So, I succeeded in changing the oil filter.
Then I discovered that the old oil dip stick, which appeared to be sealed off, actually was covered with a bolt, and silicone caulk, which I was able to pry off.
Tthe bolt where the dip stick should be is shown by the arrow in the second photo.
I stuck a tube down there and tried to pull out the oil, but to no avail. I only succeeded in making noises like a straw at the bottom of an empty cup of ice.
So, I rationalized, maybe the engine is out of oil completely. Although it does run. So I put 5 quarts of oil in the top. After waiting some time, I was still unable to suck out any oil from the dip stick hole in the oil drain pan.
Here are my possible conclusions:
1) the engine has zero quarts of oil in it. Somehow all of the oil might have leaked out through some unknown hole into the bilge. Not likely since the engine didn't seize, and I didn't see 5 quarts of oil in the bilge.
2) the engine has 5 quarts of oil in it, and I was lucky that it didn't seize up before, and I'll need to figure out where all of that oil went next time I want to change the oil since it doesn't appear to be in the oil pan.
3) the engine has 10 quarts of oil in it. Is this even possible? Would it run with this much oil in it?
I'm stumped, so lets take a survey
. Who votes for 1, 2, or 3? Personally I'm leaning toward 2.