Thor Forums

[Pete'sMH]

Originally Posted by Oneilkeys

After it drys, WD-40 will attract moisture which will result in rust. It does displace water and is great to clean off rust but it is not a good long term lubricant. While it does act as a corridor inhibitor as long as it is wet, when it drys it leaves a varnish that actually attracts water and causes rust. Since WD-40'was originally used on Atlas missiles as a rust inhibitor, it got the reputation of being a good long term corrosion inhibitor. But the Atlas missiles were in a silo in a very controlled environment with low humidity.

WD-40 does make a corrosion inhibitor.
WD-40[emoji768] SPECIALIST[emoji768] LONG-TERM CORROSION INHIBITOR protects metal parts, blocking rust and corrosion for up to one year outdoors and two years indoors. Our anti-rust spray is ideal for both preventative maintenance and use in extreme environments such as high humidity.
I have never used it, but it gets high marks. It is not your regular WD-40.

I use Boeshield T-9 Superior aircraft corrosion protection developed by the Boeing Company.

Unlike other Corrosion Inhibitors & Lubricants, Boeshield T-9 was developed by "The Boeing Companies Material Technology Laboratories" in order to meet the stringent applications required in the Aerospace Industry. Boeshield T-9 is effective because of its excellent Water Displacement, Penetration & Protective Film Development.

You might use WD-40 on a tank, but you would never use it on an airplane. In the USN it is illegal to use it on an airplane.

USAF (Retired)

I also use Boeshield T-9 . I use it mostly on my motorcycle engines and such. It works great at keeping engine cases looking fresh.