The oil pan drain pipe on our Onan MDKBN spec D generator has developed a tiny leak between the oil pan and the elbow fitting.
Looking at the parts catalog, I can only see a plug for that part (#185-5826) instead of the elbow, and no mention of any gasket.
Being in a remote location, I’m reluctant to take the thing appart to inspect what I may need, especially as the leak is far from severe (maybe a drop every few days).