Here is the type I use on my diesel truck and the 6. They're absorbent and when they get ugly you just change em out. When you're done filling, just stuff em in, no fuss.Even on the diesel it looks fine after 2 years or so (but I'm pretty careful). Comes in quantity of (5) or (10). FUEL BIB (QTY: 5)-Dodge Cummins Diesel Truck Accessories – Geno’s Garage