Originally Posted by
canadian deacon
Any automotive chassis grease should be good for headsets.
A lithium based white grease is used for assembling brake systems and for engine rebuilding, so it would be fine for headsets. Also, it will not cause swelling of rubber parts.
Many years ago an old-timey bike mech that I regarded very highly told me to never use white lithium grease on my bike.
According to him - it was not an ideal product for bicycle bearing applications because it is relatively thin and not very long lasting. Because of its low viscosity, professional racing mechanics used to pack bearings with li grease, but those bikes were overhauled regularly so durability of the grease wasn't a concern - only the low viscosity to contribute to less "sticky" resistance in the bearings.
I live and ride by the beach so he got me to buy some marine grease in a tub from a boat store. That one tub turned into a lifetime supply and I never felt the need to try anything else...