A quote about Tri-Flow grease in motors from Sew-Classic.com:
http://www.shop.sew-classic.com/Tri-...oz-TF23004.htm
Originally Posted by Sew-Classic
THE BEST lubricant for sewing machine gears that require grease. It's MUCH "stickier" than the Singer grease/lubricant so it doesn't "fling off" so much as the gears spin. The added PTFE (Teflon) makes the machine run so much smoother- Tri-Flow Grease is waterproof, clear, prevents rust and corrosion - formulatied with PTFE (aka Teflon)
Superb lubricant for lubricating metal gears- even safe for most non-metal gears that require lubrication. (refer to the service or owners manual for guidelines for lubricating non-metal gears- requirement varies) Stays put- great stuff! (USA purchase only)
Not recommended for grease tubes or pots that lubricate motor bearings via a wick. Either use the Singer grease for this or petroleum jelly for those applications
Bold text by myself.
Sew-Classic also has the Singer Lube for the motors in stock:
http://www.shop.sew-classic.com/Sing...ease-S2129.htm
Also from Sew-Classic:
http://blog.sew-classic.com/2009/01/...g-machine.aspx
This is where I read not to use Lithium grease in sewing machines.
There is really no legitimate reason to use improper lubes on sewing machines.
Joe