I have an old OD green bottle of LSA oil and I used that with cotton balls to clean up this old machine. It works beautifully for cleaning. I put some on that ancient old bandage tape and let it soak. Sewed some quilt parts and finished another whacky bag, then went back and did a bit of rubbing and that nasty sticky tape and glue came right off.
I've found that LSA oil is fairly cheep and cleans metal surfaces well. I got to get some more of that. That way I save the Tri-Flow for actual lubricating.
Joe