Brownell's Unbiased Rust Prevention Test (Surprising Results!)

[billt]

http://www.brownells.com/.aspx/lid=12616/GunTechdetail/Gun_Cleaning_Clinic__Knowing_the_Limits_of

I found this to be very surprising. Brownell's did a rust prevention test that used a total of 11 products, all tested in the exact same way to see which provided the best protection against rust and corrosion. I thought they did an excellent job because they even included their own rust preventing product in the test. The amazing part is that of all 11 products tested WD-40 came out on top! There were a few other products that did well, but the WD-40 treated metal visibly fared the best.   Bill T.

[r_w]

WD-40 was designed to displace water, so....

no water=no rust.

But that is only true if you don't let water back in, which is where WD-40 usually fails in the real world. 

[alfsauve]

I was a WD-40 champion for years, now I still think it's a great product when you need to remove moisture from a tool.  But I do not use it as a lubricant.

Where WD-40 fails is that it turns gummy after a short period of time.  And it also has poor cold weather performance.   That's not what you want in a gun lubricant

Note that this was only a rust test, not a lubricant test and note the surfaces where sand blasted not polished as most in a gun would be.

I'm pretty much coming around to ATF for most of my gun/knife lubricant needs these days.