>>1230756BBs are cheap, don't bother using one that doesn't work properly.
>>1230766Manufacturers tell you that to sell you more of them.
I have reused them several times and never had an issue at all.
>>1230772There are different ways to clean a chain, some people remove the chain, throw it into a jar full if gas, shake it for 2 minutes, let it dry, oil it, remove excess oil and reinstall it.
It is verry efficient to clean your chain that way, since it even cleans out the dirt in the rollers, takes verry little time, no special tools and doesn't make much of a mess.
>>1231219There is more fluid in your cars brake cirquit than in your bike and cars have a additional container full of it, so it takes a little longer untill you need to replace the fluid.
>>1231282It is fine, although I would recomend gas and a brush since it is cheap, verry effective and doesn't leave residues in the mechanism.
But don't forget to oil it after cleaning.
>>1231332Depends on the respective groupset, if it is friction shift it will pretty much always work, indexed depends on cassette spacing.
