I want to know your experience about carbon material and grease Can I use normal grease with carbon ? I want to put grease onto fork and stem....
Or WD-40 or silicone penetrant would be ok ? Thank you....
Can I use this one ?
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From Sheldon Brown:
Grease lubrication is commonly used on all ball bearings. Good mechanics also use grease (or oil) on the threads of most threaded fittings and fasteners, and also inside the steerer (to keep the stem from becoming stuck) and the seat tube (to keep the seatpost from becoming stuck.)
There are a great many different greases on the market with different special features, mainly for automotive applications. For bicycle use, almost any grease is adequate, since the loads and temperatures are generally low.
Q. Are Finish Line products safe for use on Carbon Fiber Frames and Parts?
A. Yes. All of our products are safe to use on carbon fiber bike parts; our three degreasers, four lubes, our polish, grease, etc are all safe to use on and around carbon fiber bike parts. The exception is our DOT Brake Fluid – you don’t want to get DOT fluid on any painted or finished surface because it’ll attack the paint / finish.
Most automotive use grease is too thick for bicycle applications. It will lubricate, but it will add friction to the movement of the bike.
Aside from the "weight" of the grease, you only need to worry about purity.
Phil Wood, of Phil Wood Components, used to say that his most important criteria for his bicycle grease was too make sure it matched the color of his original green sample. If it varied, even a little, he was besieged by inquiries about what he'd changed in his "formula".