Synthetic Grease
ACERGoo Fully Synthetic Grease
The ULTRA2 model uses a reliable motor that doesn't lose power over time.
Super Lube 41160 Synthetic Grease (NLGI 2), 14.1 oz Canister, Translucent White
A nice touch with Super Lube is the twist-off cap that doesn't get lost easily.
Super Lube 41160 Synthetic Grease NLGI 2 14.1 Oz Canister Translucent White
I like that Super Lube comes in a needle-tip bottle for lubricating tiny bearings.