Great for hinges and lock mechanisms. Not for use in cylinders of locks where the key is inserted. Use powdered graphite for that. I use the Superlube for some items.

WD-40 wasn’t the worst choice you could have made, but you should not put that oil into a lock (Hint: there isn’t a lock in the pictures of how it can be used). Oil attracts dust and dirt and gets gummy and then your lock is worse.

Wait for the silicone grease to use on the locks and save the 3-in-1 for your squeaky hinges. Google for instructions on how best to lubricate a lock.

I agree. 3 in one does work for many things though, and so does wd 40, but, graphite is for any lock you are putting a key into.

I hear about the graphite, but (per Colleen) can the superlube silicone 92003 also be used in the lock at the front-entry of house? Not just rusty padlocks & hinges?

What are the drawbacks of the silicone 92003 versus graphite for padlocks?

I'm disgusted, because Lowes shipped me the synthetic version rather than the 92003 that's on my invoice. Such a hassle, and that's an understatement.

OIl attracts dust and dirt. Graphite does not. Meaning you will glom up the lock tumblers with dust and crap attracted to the oil.

Nothing wrong here, but much ado about nothing!

wOiley32 have you tried the SuperLube 92003 silicone-grease?

It claims to be for locks.

I would not use that. I would use ONLY graphite. You're choice though.

Maybe if you show us photos of these locks and rusty padlocks we could better help. You seem fixated on solutions that you want and not solutions to the problem(s).

SuperLube 92003 is a grease. I would never use that in a lock, grease attracts dust and dirt and might form gummy deposits, which will make the lock hard to operate. But it's your lock, not mine. If you want to try it out, you can. But if it were my lock I would stick with dry graphite. Tried, tested and true.

I grasp that everyone favors graphite for padlocks. What would you all use for screeching car door hinges? Because I think i've seen a video of someone using Superlube 92003 for that.

I use Superlube in both a spray and a tube for mostly automotive applications. It seems to penetrate and the spray doesnt leave a lot of extra to attract dirt.

For car door hinges your 3-in-1 oil should be fine.

For a lock cylinder your kosher grease would be the worst option; 3-in-1 oil would be better; and WD-40 would be even better; but none of those are good options!

Seabornman, am i missing something? If (as you say) SuperLube spray-version doesn't leave alot of extra to attract dirt - on outdoor-car hinges - then why wouldn't it act the same way on outdoor-padlocks?

kosher-grease - hmmm - whatever that's supposed to mean.