Anticorrosion treatment for magnesium cases

[Neven911]

Hi,

What do you use to treat magnesium to protect it from corrosion, ACF-50 has been suggested but it only lasts 2 years, has anyone used bonderite m-cr t5900?

Thanks Neven

[cgarr]

I just soak it good with Gibbs

[stownsen914]

Early Porsche engines are self oiling thus no preservation needed

[pmax]

Originally Posted by Neven911

Hi,

What do you use to treat magnesium to protect it from corrosion, ACF-50 has been suggested but it only lasts 2 years, has anyone used bonderite m-cr t5900?

Thanks Neven

Interesting product.

Thanks
ACF-50
Kills existing corrosion and prevents new
'ACTIVE' for up to 12 months
Excellent lubricant and penatrant
Approved for use on electrics and engines
Easily applied non-drying, ultra thin, clear film
Very economical
Contains no wax, silicon, Teflon or water

ACF-50 (Anti-Corrosion Formula) was originally designed to protect aircraft from existing and new corrosion and is now available to motorcyclists. Aviation products have to meet rigorously high standards and ACF-50 not only meets these but has been awarded Aviation approvals - MIL-SPEC 81309 types II and III which means it is 'approved for ferrous and non-ferrous metals, electrical systems and electronic components'. The US Navy carried out tests using ACF-50 on the jets on their Aircraft Carriers. They found that ACF-50 so significantly reduced the corrosion they had previously experienced they now use ACF-50 all the time! It works in that type of harsh environment so imagine how well it's going to protect your bike! When applied ACF-50 forms an 'Active' ultra-thin clear film that will kill any existing corrosion cells and will protect your bike against new corrosion forming. On areas such as switches or under the tank and seat, one application will last up to 12 months. Other more exposed areas will need topping up more regularly. ACF-50 has the ability to 'chemically neutralise road salt' and water will bead on contact and literally bounce off. Ideal for the bike that is used all year round in all weathers, a superb service spray as ACF-50 is also a lubricant and penatrant (without loosening structural attachments) and if you put your bike away for the winter, applying ACF-50 will ensure that moisture will not be allowed to cause any damage! Untreated moisture will creep into cracks and will not freely evaporate - ACF-50 actively ejects moisture from these areas.

ACF-50, Anti-Corrosion Formula, is a state of the art, anti-corrosion/lubricant compound, that has been specifically designed for the Aero Space Industry. It can be described as an ultra thin fluid film compound which must be applied on an annual basis. ACF-50 actively penetrates through the corrosion deposits to the base of the cell where it emulsifies and encapsulates the electrolyte, lifting it away from the metal surface. ACF-50 then dispels this moisture and provides an atmospheric barrier which prevents any further moisture contact, thereby keeping the cell inactive. This compound continues to actively penetrate and "creep" into the tightest of seams, lap joints, micro cracks and around rivet heads, dissipating the moisture, even salt water, in these corrosion prone areas. These unique abilities of ACF-50 remain effective for 12 months, gradually disappearing as it is chemically consumed.

It is important to emphasise that ACF-50 is also an excellent lubricant but does NOT contain any wax, resin, silicon or Teflon... compounds that can gum up mechanisms, block drain holes, or trap moisture to cause corrosion.

[Neven911]

I think the answer is don't bead blast the outside of the magnesium case and remove the original DOW-7 treatment

[stownsen914]

I periodically treat magnesium parts with a 50/50 mix of oil thinned with mineral spirits. Apply with a small paint brush.

[jpnovak]

I have had good luck soaking down Mag parts with CorrosionX. I spray on and then cover with a cheap bristle brush.

It is very similar to Gibbs. And available at my local Marine (boat) supply store.

[pkabush]

+1
I’ve used Corrosion X on my boat motors for ever. I started using it on the P-car a few years ago
Great product. I like Gibbs as well. Not sure which one lasts longer

[911pcars]

Don't believe the product advertising hype. Search for independent test/comparisons of the product. Many of these products are only temporary coatings, unless that's what you want.

Like this:
https://www.practical-sailor.com/boat-maintenance/paints/corrosion-protection-coating-test

or this...
https://youtu.be/9SOOfZFmhSY

Cerakote makes a heat rejection ceramic coating (elevated temperature applications). However, their coatings typically require a rigid prep process, better applied in a rebuild.

Sherwood

[pkabush]

I was never under the impression that CorrosionX or any other spray would work as a permanent solution. As the article you linked stated “there’s no silver bullet”. However it was an interesting test and I’ll probably switch to CRC. So, thanks for posting it.