I agree with Rodney and Miriam. Use one drop of oil where metal meets metal and grease/lubricant for gears. I recommend against oil on gears. Oil can be any brand of actual sewing machine oil or Tri-Flow oil, but certainly NOT WD40, 3 in 1 oil, etc. Lubricant can be Singer lubricant in the small tube, Tri-Flow lubricant (love this stuff!), and some people use petroleum jelly in a pinch. I find Tri-Flow oil and grease to be superior to other brands.
I have never used this before and am unwilling to try it on my beloved machines when Tri-Flow meets the needs of the machines so well:
http://www.amazon.com/Slip2000-60341...r_3225971011_8
This is Singer Lubricant. If you cannot find Tri-Flow lubricant, use this on gears only. Remove the old grease before applying new grease. Here's a link:
http://www.joann.com/singer-sewing-m...t/1046671.html
Do NOT believe JoAnn's description. It is wrong and misleading. They say "Singer® Sewing Machine Lubricant is used to lubricate your sewing machine motor where metal parts come in contact with each another as well as protection against damage from rust. " Now that is confusing. It is NOT used for the sewing machine motor. It is NOT used where metal parts come in contact with each other - that is sewing machine oil. It is used only on gears, those round metal pieces that have teeth that meet with another gear's teeth. If you listen to Joann's, you could harm your machine.
BTW, this lubricant is NOT the same as Singer motor lubricant, which is hard to find, anyhow. I find that I seldom need motor lubricant.
Cricket