There are numerous testimonials for the oldest/most stuck/most corroded parts freed by AeroKroil.  In airplanes in particular, there are lots of aluminum, anodized and coated parts...everywhere.  When you apply this stuff...and PB Blaster and CRC656...it goes everywhere.  AeroKroil is approved by all aerospace builders (I think).  Every 6 months, I fog everything with ACF50 (like the Navy does with their carrier jets).  I think using these two products will displace water, and seep oil into any corrosion you might have.  The only worrisome issue is that the plastic nozzle may not last as long as the contents, so think thru buying the big can unless you are really needing it...like restoring an old CAT bulldozer.