Lary0071
Well-Known Member
I just picked up a fresh new Cummins 3500 and filled the diesel fuel up, I observed what appears to be a very light duty dust cap over the fill port opening. I removed it and filled the truck, then replaced the cap. Am I supposed to keep this on the opening while not filling with fuel? I would think that they could have made a better quality cover if this is a recommended practice. I'm uncomfortable with these new "capless" fill ports, I worry that water and/or salt may find it's way into the fuel door and get into that fill port opening. Is there a better made aftermarket cover to prevent anything from getting into the port?