Is this normal ? I usually use my outers no9 gun oil but at the moment it is packed away so I went for my trusty ol can of ballistol i've used maybe once before? I open the can and it looks like used motor oil and theres brown sludge built up just below the pour spout . I shook it up and it took most of the sludge away but holy goodness it looks like runny poop. Is this what ballistol is supposed to look like?