It rusted after the first rain...

[Buckethead]

I recommend that Dupont stuff as it dries to a wax like consistency and won't fling off, leaving your chain well protected for quite a while.

+1

It also smells like pina colada, which is a plus.

[Langanobob]

I already removed it with WD-40, a rag, and a brass brush (on the outer plates only) and then I sprayed some oil, but now the plates have some grey dots where the rust grew..

I guess I will now have to wait and see if the rust stop from regrowing...

The good news is that this rust or slight pitting left on the plates after you removed the rust isn't hurting anything at all, other than maybe the appearance of the chain.  And, you're probably the only one who will notice, although as owner, your opinion counts.

I sometimes hear people saying that rust is like a cancer and once rusted,  steel will continue to rust.  The chemical reaction for rust includes oxygen and water and in the absence of oxygen and moisture, and like San Panda says, as long as you've protected it from with lubricant, and the chain will not continue to rust.

If it still bothers you I suggest  just keeping it lubed, riding it a lot and wearing out the chain so you can buy a new one.

Bob

[godudi]

If it still bothers you I suggest  just keeping it lubed, riding it a lot and wearing out the chain so you can buy a new one.

Bob, your picture is going in my dictionary next to genius...lol

[godudi]

godudi - roll down to a Lowes or similar and find some of the Dupont Multi Use Teflon spray, there's also a version of it for chains that they came out with last year
http://www.webbikeworld.com/t2/motorcycle-chain-lube/dupont-teflon-chain-saver/

I don't think we have it here, but I will check it out again or maybe find it on ebay..

[bikepilot]

To keep rust at bay on the ultra-crappy stock chains you've gotta wipe the whole chain with lube.  Spraying just the pivot points does help keep it nice and clean and is generally the way to go imo, so you've mostly been doing it right.  It just doesn't keep crappy chains from getting cosmetic rust.  You can spritz the whole chain, then wipe it down with a rag so it doesn't have a ton of excess or even just wipe the sides with WD40 as it won't gunk up as much as chain lube.

Sooner or later the thing to do is to put on a quality chain.  The stock chains are just junk (goes for all brands I've had experience with).  A DID ZVMX or ERV3 chain will stay looking pretty, be stronger and last a whole lot better than the oem one.  You can generally get them in nickle or gold.

Also, FWIW, heman is a little mistaken, colored chains aren't really annodized - you can't really annodize steel so well.  Colored chains will be painted or plated with something.  Generally nickle or some gold colored plating.  The other colors will usually be paint.

the dupont stuff works well if you don't do big miles or ride in a lot of bad weather.  I found for lots of riding in lots of bad weather it just didn't stay on the chain long enough.  Proper bike chainlube stays on better.  if you mostly do shorter and/or good weather rides the dupont stuff is fine.

[godudi]

To keep rust at bay on the ultra-crappy stock chains you've gotta wipe the whole chain with lube.  Spraying just the pivot points does help keep it nice and clean and is generally the way to go imo, so you've mostly been doing it right.  It just doesn't keep crappy chains from getting cosmetic rust.  You can spritz the whole chain, then wipe it down with a rag so it doesn't have a ton of excess or even just wipe the sides with WD40 as it won't gunk up as much as chain lube.

Sooner or later the thing to do is to put on a quality chain.  The stock chains are just junk (goes for all brands I've had experience with).  A DID ZVMX or ERV3 chain will stay looking pretty, be stronger and last a whole lot better than the oem one.  You can generally get them in nickle or gold.

Also, FWIW, heman is a little mistaken, colored chains aren't really annodized - you can't really annodize steel so well.  Colored chains will be painted or plated with something.  Generally nickle or some gold colored plating.  The other colors will usually be paint.

the dupont stuff works well if you don't do big miles or ride in a lot of bad weather.  I found for lots of riding in lots of bad weather it just didn't stay on the chain long enough.  Proper bike chainlube stays on better.  if you mostly do shorter and/or good weather rides the dupont stuff is fine.

I will never replace the ultra-crappy stock chain ever again with another new ultra-crappy stock chain!!