/diy/ - Do It Yourself

BTW that's the loose hose in the far left of the previous image: >>1464919

And this is the top end of the hose. I don't even seen an opening where this connector would allow fluid to pass. It almost looks like a greasing tube or something meant to inject grease into the front differential from a more convenient spot? But I don't know why it would be loose, and I can't find any sort of mount or connector which would mate to this.