mkhuffman
Well-Known Member
I drove a E320 diesel as my primary for 14 years and put 330,000 miles on it, and I never realized the diesel pump nozzle was larger than a gas pump nozzle.The X3d has a "blocking flap" mechanism in the filler neck that is supposed to only release when the wider diesel neck is inserted. It's supposed to stop someone from inserting a gasoline filler neck. The problem is it works too well - sometimes you have to try several times with the diesel filler neck to get the flap to open. I'm not sure if this flap exists on other diesel vehicles.
In the past 9 years, we have never loaned the X3d to anyone, unlikely to ever happen, but I would make sure they know.
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