Must be that new fuel!

660catman

Active member
May 18, 2021
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2013 Sierra SLE 2500HD Crew Cab
 

Ron Nielson

Active member
Oct 11, 2009
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Berryton, KS
I'm not surprised. One day I was driving my Mercedes (gas engine) and stopped at a Costco that has diesel fuel. Not a lot of Costco's carry diesel, but this one did. I found myself trying to squeeze the diesel nozzle into the smaller gas fill opening and workiing at it with some gusto, before I caught myself being very stupid. It happens.