Originally Posted by krispistoferson
It's fine for what it is, which is to degrease/derust and unstick rusty parts. Some minor lubrication, like seatpost, on a bicycle is fine, but it IS NOT chain lube, nor is it bearing grease. The stuff is thin and evaporates. I know some of you swear by it, and some of you are not even trolling when you post this stuff, but seriously, to all n00bs, don't use it to lube your chain, headset or bottom bracket. That way lies madness.
+1 True words of wisdom.
WD40 works fine as a solvent to clean your chain and gears but not to lubricate and I don't trust it to prevent rust, either.
Kerosene works very well as a solvent too, but it doesn't come in a convenient spray can.
Vote for Pedro (chain wax)