2G Question for the 2g awd E85 users

[v8s_are_slow]

Just wondering if any of you guys that use it have any issues with your fuel looking like this if it sits for a bit. I'm wondering what y'all do for the sealing rings on top of the tank and if they would possibly be an issue, or if it's the seals I'm using for my fuel sumps on bottom of the tank. I have new seals for the rings on top but trying to diagnose what's causing it and wouldn't think the fuel would be hitting the rings enough to sit there and deteriorate them. Trying to remedy this problem though. Mine are pretty old so maybe that's the issue but still wouldn't think they'd be resistant to that fuel? Where you guys at on this?

You must be logged in to view this image or video.

 

[jed344]

Never had that issue. I have replaced my hanger sealing ring though. How long did the fuel sit in the tank?

 

[v8s_are_slow]

Maybe a month or so. I'm going to assume and HOPE maybe it's just the rings because they're pretty old. Just didn't know if this was a common issue or not.

 

[Mello]

Some materials used for making seals are volatile with E85 including E85 vapor. The seals do not have to be submerged to deteriorate.

 

[v8s_are_slow]

That's good to know.

 

[Mello]

This should help you Welcome to our Rubber Chemical Resistance Chart
This one too Ethanol & E85 Material Compatibility