I don't think so, but I'm not positive. Somewhere I remember reading that you should use the Singer grease or vaseline in the motors and just use the TRI-FLOW grease on the gears.
http://shop.sew-classic.com/Tri-Flow...oz-TF23004.htm
From Sew-Classic ref using Tri-Flow grease in motors:
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
Joe