Halo 4 game fuel codes

I see that it’s not actually game fuel but Halo 4 labelled dew products. I am going to stock up on double exp stuff just cause it’s got Halo on it but these codes, how long are they valid? I wanna use the dew in playing Halo 4 but it seems more like they want us to start putting in codes now and cash in once Halo 4 is out.

Can I get some clarification ray over here? Please and thank you.

Valid until somewheres in February I believe.

They’re good until the end of January. Get the Doritos, they can be used two times. But only once per account.