Capless Fuel Filler - 2014 Ram 1500 EcoDiesel Long-Term Road Test

2014 Ram 1500 EcoDiesel Long-Term Road Test

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2014 Ram 1500 EcoDiesel: Capless Fuel Filler

May 28, 2014

2014 Ram 1500 EcoDiesel

Our new 2014 Ram 1500 EcoDiesel has a capless fuel filler, but you'd never know it from the picture above. The little green insert may look like the worlds lamest fuel cap, but in reality it's a throwaway piece the dealer was supposed to remove and toss aside as part of the pre-delivery inspection.

What's it for? It's part of the fuel tank sub-assembly, which arrives at the assembly plant with the filler neck in place. This little cap is there to prevent material from going down the neck and into the tank during shipping, handling and final assembly at the plant.

2014 Ram 1500 EcoDiesel

This explanation came over dinner during a conversation I recently had with Mike Cairns, who heads Ram Trucks Engineering. He assured me this little cover is no longer necessary once the truck is screwed together and shipped out of the plant. They run all of their durability tests without this piece, in fact. In regular use the little trap door and rubber gasket on the inside of the filler door conspire to provide all of the necessary dirt, dust and moisture sealing that's required.

Indeed I've not seen this little hunk of green plastic on any of the numerous 2014 Ram 1500 and 2500 diesel trucks I've borrowed from the press fleet or examined at events. The sight of it here on our new 2014 Ram 1500 EcoDiesel was a surprise to me, quite frankly.

But he also said it's not hurting anything. We don't, strictly speaking, have to throw it away and run without. Then again, why wear a cap if you don't have to?

Dan Edmunds, Director of Vehicle Testing @ 2,575 miles

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