In the past, Epson had performance challenges with yellow and orange on the GS6000 inks. Yellow faded as soon as 3 months outdoor, even when laninated. Orange lasted a little longer but few profiles were actually utilizing the orange or green sufficiently so it was not as widespread as the yellow.
However, the new GS3 inks, used in the S40600, S60600 and S80600 are not the same.
We have tested the inks in an independent third party weather chamber and Avery and 3M have also performed their own independent testing.
Based on the results of the tests and information gathered from Epson, here are the outdoor lifespans for the GS3 inks:
CMYK, Light Cyan, Light Magenta, Light Black, Orange and Red: 3 years outdoors unlaminated. 5-6 years outdoor laminated with a UV laminate.
White: 1 year outdoor unlaminated. 2 years outdoor laminated with a UV laminate.
Silver: 3 weeks outdoor unlaminated (will start to turn green). up to 3-6 months outdoor laminated with a UV laminate.
The following chart is from Epson. *The stated lifespan does not include white or metallic ink.