Anti corrosion spray

[seaangler23]

WD-40 ? Did a Diesel engine course with an ex-navy mechanic who would spray the engine from top to toe in WD-40

Wd40 won't last long at all, too thin
Acf50 is about as good as you will find, use it on bikes for road salt and went around and coated any bare Alu on my masts with it when winterising

 

[DrugboatDreams]

Brilliant - Have ordered ACF-50

ACF-50 make a marine-specific product called Corrosion Block, which is available as both a multipurpose grease and a spray: http://www.acf-50.co.uk/corrosion_block.htm (this site actually links to an aeronautical supply website to buy it from, and is the best supplier we've found).

It sticks around longer than standard AC-50 (which was itself developed to prevent corrosion on aerospace aluminium) and is more resistant to the marine environment. Expensive, but worth every penny in the long run. We're using it liberally in the refit of our aluminium yacht, and will continue to for maintenance.

 

[Roberto]

Boeshield is excellent too, I coated my sewing machine, which rests near the bilge and it s perfect. Probably easier to source/cheaper in the US/Caribbean area, iirc it was invented by boeing then licensed to someone else (?)

 

[lw395]

WD40 is horrible. It builds up a sticky layer which eventually collects dirt and then starts conducting electricity. It is intended as a water dispersant (WD).

That could equally apply to ACF50.
If you spray something with oily stuff that doesn't all evaporate or run off, building up a sticky mess is always going to be an issue.
When it gets dirty, you have to spray on some more fluid and wipe off the grot.

I use ACF to penetrate behind rivetted on fittings and such like.
For cleaning and leaving a dirt/water resistant layer I find GT85 quite good, especially when Aldi are doing it for a couple of quid.

For general dirt resistance and cleaning, cheap aerosol polish can be quite good.
If you don't want stuff to corrode, keeping it clean is often a good start.

 

[nimbusgb]

+1 for ACF 50.

Doesn't build up a sticky residue. I use it as a wiped on finish on shotguns too.

Tools on boat given a light spray occasionally have stayed good for 12 years and are not icky to handle.

 

[CLB]

There was a test if these products in a Mobo mag a year or so back. Corrosion Block (ACF50) initially won out, with a couple of other products doing equally well. WD40 actually did OK, and better than many other anti corrosion products. Interestingly, the longer term test didn't favour Corrosion block, but Quicksilver Corrosion Guard, which was the only product showing no corrosion on bare mild steel after three months, including application of salt water, after just a single initial application.

 

[lw395]

I would think tarryblackshit or reallysnottygrease would perform quite well, but you don't really want this kind of thing where it's going to rub off on your Armani suit. Or your Musto's which cost more...

 

[sparkie]

Only thing I would add to all this is that I use ACF-50 a lot on my bike and car, I used to use it on the electrics but found that although it prevented corrosion, it also seems to hinder the current flow between contacts if present in excess. Nowadays if it does find its way onto any such contacts I wipe off the surplus with a cotton bud etc. before using. Apart from that an excellent product.