Using ACF-50

[Athame57]

Is it safe to use  ACF-50 on really hot areas like exhaust flanges, and has anyone got an opinion formed about it's effectiveness generally?

[K2-K6]

It's more or less white spirit/Stoddart solvent  (flamms risk) with thick viscosity petroleum based oil, as many things like this, volatile in hot environments.

The spray type products usually have a solvent to make them flow and carry the base oil into a dispersed film on target item and penetrant to small gaps, eventually to evaporate and leave the chosen oil in place.

Less volatile once that evaporate stage has completed.

Seems quite effective at producing longer term sticky oil film to help prevent water driven corrosion, but unlikely useful on very hot surface items.

[Bryanj]

Biggest problem is the propellant gas is butane, its safe if hot but not if red hot

[4wDaz]

We had a rep give us a cheaper alternative to ACF-50 to try called - Brunox Lub & Cor Long-Term Corrosion Inhibitor. We tested it by vapour blasting some rusty nuts and bolts on my daily ride then coating them in the Brunox, it worked a treat, been on over 6 month now and no rust, it’s made in Switzerland I believe but seems to be getting hard to find now in large quantities

[flatfour]

It was always considered the gold standard for protection against corrosion for light aircraft - mine was always treated annually, using a very long perforated tube passed through the wing ribs. Spar or internal corrosion was never an issue afterward in any of the aircraft that I owned.

I use it in aerosol form on the older bikes each winter, and it seems to do the job well enough. An additional benefit is that, unlike some other products, it does not turn yellow over time.

[Matt_Harrington]

PX24 is also pretty good.  I was once given some concoction from RR Aero Enines that was used when storing parts - basically lanolin in a solvent. I used it on wire wheels on my daily rider back in the 80's - fanstastic stuff but a sod to remove once it had dried.....