Just an update. I’ve added a inline fuel filter between the aux tank and the regular filler liner.
I also added a filter on the aux tank overflow tube since they are inexpensive and it seems like the contamination could possibly be coming from that?
The one issue I had is that the one time I left the manual valve open from the aux tank, it did over fill the main tank, probably lost a couple cups of fuel before I saw that. Any idea why that would happen?
Im still considering a spin on type fuel filter but not 100% convinced that it will work with a gravity feed.
These are the filters I’m using now.
Filter
