With these slides clean, they definitely don't roll smoothly, so they need something. A spray of wd40 may make them briefly roll smoothly, but it won't last and I have no desire to regularly be spraying drawer slides. While wd40 can provide some lubricating properties, it is absolutely not a long term solution. I can spray a door hinge with it and it will definitely quiet down, for a little while. That's not the kind of thing that I feel like is the right solution for this purpose.Good Morning Mike!
All non drying greases and oils will attract dirt. Many of us do not maintain/service toolbox slides. So they get nasty and start moving slowly.
A better question is why put anything on them at all?
WD40 is absolutely a lubricant. It's just not a great one. WD-40 is essentially a light mineral oil, not unlike Kerosene in an aerosol spray bottle. Internet lore says "it's not a lubricant because WD stand for "water dispersant"". That's true. It was marketed that way, but that doesn't change what it is.
3 in 1 oil came from my home state of NJ! The 3 is "cleans, lubricates, and protects" just like the "special" CLP Breakfree oil you can pay crazy money for in a gun store. It too is just mineral oil.
You can use 3 in 1. Everyone should have 3 in 1 in their toolbox. I think WD-40 is probably used by guys who occasionally reapply it. Maybe the aerosol helps dislodge old dirty oil. And it helps you get oil in spots where you need it.
I'm sure some here would recommend SuperLube. SuperLube is really not an amazing grease. There are plenty of better greases. The advantage of SuperLube is that it's a full synthetic (and its conveniently available, where some industrial greases are only sold in tubes or 5 gallon tubs). So your drawers won't be stiffer in freezing temperatures. But if that's not a concern, then any other grease would work fine. If your box is essentially stored inside, and doesn't get exposed to any elements, dust, pollen, saw dust, grinding dust etc etc, then it probably doesn't matter what you use to lube your slides.
To be honest, dry film lube is probably the "right" thing to do. WD-40 makes a lot of sense when you think about reapplying it to flush debris out. If the only thing WD-40 did was blow out dirt, it would be worth it. But that's not all it does. It will leave an oil residue behind.
My garage is not the dirty environment that most people have for shops...I don't do wood or metal working in it at all. It's the main entry path for my house and we also have a fridge and freezer out there that we use a ton, so I'm not worried about them getting nasty.
I'm really not inclined to improvise and certainly don't know more about drawer slides than accuride
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