What to use to stop aluminum corrosion ?

[440]

What do you guys use to stop aluminum corrosion under the hood?

Long story short due to lack of undercover space one of my cars sits outside under a waterproof cover. It is the tail end of winter and upon charging the battery back up I was surprised to see the ugly aluminum corrosion is quickly is starting to take over everything. Luckily I found it when I did as it just wipes off at this stage but I think if left any longer would become a much bigger issue.

Any semi lasting solutions like a wax based product that you know of or? Thank.

[440]

Ok, I must be the only one with this problem 

[Lennard]

No such issues here in dry Arizona. 

[green69rt]

Ok, I must be the only one with this problem 

You may be able to use something like RPM.  I haven't looked at the jar to see if it is recommended for aluminum but seems like it would work.

http://ecs-rpm.com/

[c00nhunterjoe]

Are you trying to preserve smooth polished aluminum, or rough cast? Polished i just keep it waxed up with mothers or any other polish. Rough cast is more difficult. I ended up painting my intake rough cast aluminum and it solved that problem.

[440]

Thanks for the suggestions. The polished parts are easy as Mothers fixes it up quicky and has a protective wax. The problems are the cast aluminum parts like intake, alternator, water pump etc

[Bronzedodge]

Well, either Krylon clear or you spend big bucks and have it anodized.

[Troy]

 I live in Ohio and that happens to every car I own it seems. I don't know of any easy covering to stop it (wax, etc.). If something like RPM would work that would be great. If it gets to be more than a fine dust you can remove it with Marvel Mystery Oil - which also helps protect it for a while. To stop it from happening, you can clear it or use a cast paint as mentioned (but that's a lot more work!).

Troy

[green69rt]

Just checked the web site and it says that RPM works on all bare metals including aluminum.  Worth a shot.

[Charger-Bodie]

Sharkhide ! It's amazing stuff

[440]

Troy, does the Marvel Mystery Oil stain or discolor the cast alloy?

The RPM and Sharkhide products look good. I'm liking the RPM stuff. Go for a drive and then paint it on.

On a side note I always paint my tie rods etc in clear but this might be a whole lot easier.

Thanks