At first, I only had Singer sewing machine oil on hand so that's what I've always used for oiling & cleaning. Until I was introduced to this board, I didn't even know there was anything besides Singer machine oil. Then I started looking for TriFlow and got waylaid by a store clerk who said she used 3-In-1 on her sewing machine all the time. I saw on some post that TriFlow grease was needed for certain parts but Sew Classic is out of stock so I've been trying to find it locally. So before I switched to anything besides sewing machine oil, I wanted to double check with the experts. I have one more place to check but will likely order it online. Now that I'm reassured that I can do a lot with the sewing machine oil, I won't procrastinate any more and I'll get started on my 1947 Singer which just needs some light cleaning & oiling. I appreciate all the great information.