NewRamGuy
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This is a warning to all of you using gravity-fed, auxiliary fuel tanks (specifically hot shot and RV haulers):
I have to admit seeing the cheap plastic fuel-fill cover on my ‘21 3500 made me shake my head in disgust. Really Chrysler, on a $70K plus truck, really? So I set out to find one of those anodized aluminum covers advertised almost everywhere. I ended up purchasing one on Amazon specifically designed for the ‘19 to present trucks. ‘18 and below had their own model.
I loved the way it locked in place keeping fuel in (or so I thought) and everything else out. It worked fine…until I filled the 91 gallon auxiliary tank mounted in the bed, or tried to.
It turned out the neck of the aluminum fuel cap protruded into the fill spout depressing the convex, metal cap allowing fuel from the auxiliary tank to spill out on the ground.
After trying to figure out what had happened and why diesel fuel was still pouring out even after I hung up the hose I reached into the bed and shut off the petcock to the auxiliary tank. The fuel immediately stopped flowing. By this time there was a semi behind me in line at the truck where all this drama occurred. Pull out and parked in spot and began to examine everything.
My findings were this: without the auxiliary tank (or with the tank valve in the off position) the aftermarket cap works just fine, even though it ‘opens’ the convex metal seal. The aluminum cap becomes the ‘seal.’
Now I’m back using that cheap plastic cap. Lesson learned…the hard way.
I have to admit seeing the cheap plastic fuel-fill cover on my ‘21 3500 made me shake my head in disgust. Really Chrysler, on a $70K plus truck, really? So I set out to find one of those anodized aluminum covers advertised almost everywhere. I ended up purchasing one on Amazon specifically designed for the ‘19 to present trucks. ‘18 and below had their own model.
I loved the way it locked in place keeping fuel in (or so I thought) and everything else out. It worked fine…until I filled the 91 gallon auxiliary tank mounted in the bed, or tried to.
It turned out the neck of the aluminum fuel cap protruded into the fill spout depressing the convex, metal cap allowing fuel from the auxiliary tank to spill out on the ground.
After trying to figure out what had happened and why diesel fuel was still pouring out even after I hung up the hose I reached into the bed and shut off the petcock to the auxiliary tank. The fuel immediately stopped flowing. By this time there was a semi behind me in line at the truck where all this drama occurred. Pull out and parked in spot and began to examine everything.
My findings were this: without the auxiliary tank (or with the tank valve in the off position) the aftermarket cap works just fine, even though it ‘opens’ the convex metal seal. The aluminum cap becomes the ‘seal.’
Now I’m back using that cheap plastic cap. Lesson learned…the hard way.