Victorinox oil works well and is food safe.most light oils work too
I use 3in1 for my Leatherman MTs. I add very little to the pivots from time to time and when I get a new to me LM MT, I always clean first then add 3in1 oil to the pivots and give the whole tool a little wipe. I'm not overly concerned with food safe on those. On my SAKs and Trads I use a very light drop of Mineral oil. I like to use something that I'd be able to consume since the knives will be in contact possibly with food. I use my can opener on my SAKs but I don't use my blade on food necessarily. Regardless I like to use a food safe oil.
I just used 3-IN-ONE on a Wave I recently acquired which was stiff in places.First I soaked it in water with dish detergent, then scrubbed with an old toothbrush which was luckily all it needed to remove any dirt, then dried it the best I could with a paper towel.Next I sprayed CRC 5:56 (I don't have WD40) into all the pivots to help free them and also to displace any moisture still in there. I worked all the moving parts repeatedly then wiped off as much as I could.Lastly I worked 3-IN-ONE into all the pivots and wiped off the excess.It all moves much more freely now although I may loosen one of the pivots as some of the internal tools are still a bit reluctant to come out.I'm not saying you should do all this, it's just what I did. You could probably just go straight to the oil.
I use 85 weight Nano Oil on damn near anything (it's thick enough that it even does a passable job on torch threads), it seems pricey at first but I'm about a 3rd through a syringe thing that I bought 6 years ago and lets say my collecting problem hobby is in an advanced state
First off, I'm going to move this to General, as more people are likely to see it there, and this forum is more for site questions rather than tool questions.Secondly, here's all you need to know about Uncle Def's:https://forum.multitool.org/index.php/topic,26980.0.htmlLastly, despite the above, I strongly recommend using a dry lubricant like powdered graphite. Liquid lubricants (oils) trap all kinds of nasty stuff inside them, and then when they dry out, all that crud is pretty well cemented into the pivot. A dry lube won't do that.Def
I like Ballistol.
wd-40 but it collects pocket lintkrae penetrating oil, works good gets deep into a stuck pivot.
Can it be used on knee joints/backs/shoulders etc? Asking for a friend....
Yes, but the supplied nozzle is quite blunt and it's a bit of a pain to get in to the joints with it
Is INOX still available? That's what I use and really like it. I got it from a member on SOSAK (knifeforum days) and only use it occasionally.