Don't use WD-40 as said before though. It washes lubricants away, so if you use it you will have to re-apply lubricant. I also like the teflon based ones for drives etc.
Oh yeah, its the same on your car ! If you use WD-40 like I did on my rear brakes one year for an MOT (UK car safety test) you will find everything has rusted twice as bad the next year ! Looobricate !!
Good advice ppl :-)
Oh and mines a :pint: