Odd discoloration on oil bottles(Pictures)

[Chris B.]

So these are factory sealed Honda DW1 ATF oil bottle. They have been on my shelf for less then 2 years, The bottles have been discolored where the fluid line is on the inside. You can see on the front bottle the discoloration line is lower towards the bottom since I used some of it. You guys ever see this on any automotive fluid containers before? Will this have a negative effect on the ATF fluid? It looks and seems good....Thanks for any input!

 

[Gasbuggy]

Mine do it too, fluid looked/functioned great.

 

[bbhero]

It’s the zinc in there that causes this…

 

[earthbound]

that is prolonged exposure to sun rays/and or the store lighting taking its toll on the plastics. seen this numerous times where I work...
*disregard didn't see the fluid levels*...