Bad Diesel?

Indvdl M · 03-21-2019, 06:26 AM

Last Friday I stopped at a Shell station in DE. I got a tank of diesel and by the time I got home, 80 miles later, I had a slight low RPM stumble/vibration. I monitored it until yesterday (Wednesday). No change, MPG was steady, no SES Light. The stumble/vibration was most noticeable when revving in Neutral or Park, when trying to figure out what was going on. Under load it was noticeable but not significant. Last night I added a bottle of cetane booster and got a new tank. Immediately, the issue was gone. Has anyone had this issue? My expectation would have been that bad diesel would have caused more issues and or thrown some codes. Just looking for some other experiences.

-Andrew

Spyro235 · 03-21-2019, 06:58 AM

I have no personal experiences, but know that bad diesel IS an issue that you can run into. Maybe that diesel wasn't THAT bad, but truly bad diesel will require a full flush of the entire fuel system, and can potentially cause damage.

03-21-2019, 06:26 AM	#1
Indvdl M Second Lieutenant 48 Rep 223 Posts Drives: '11 335D, '15 F80 Join Date: Oct 2014 Location: Naptown iTrader: (0)	Bad Diesel? Last Friday I stopped at a Shell station in DE. I got a tank of diesel and by the time I got home, 80 miles later, I had a slight low RPM stumble/vibration. I monitored it until yesterday (Wednesday). No change, MPG was steady, no SES Light. The stumble/vibration was most noticeable when revving in Neutral or Park, when trying to figure out what was going on. Under load it was noticeable but not significant. Last night I added a bottle of cetane booster and got a new tank. Immediately, the issue was gone. Has anyone had this issue? My expectation would have been that bad diesel would have caused more issues and or thrown some codes. Just looking for some other experiences. -Andrew
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03-21-2019, 06:58 AM	#2
Spyro235 Captain 260 Rep 714 Posts Drives: '10 X5D, '04 330i ZHP Join Date: Jan 2017 Location: CO iTrader: (0)	I have no personal experiences, but know that bad diesel IS an issue that you can run into. Maybe that diesel wasn't THAT bad, but truly bad diesel will require a full flush of the entire fuel system, and can potentially cause damage. __________________ Daily/ Tow: 2010 X5 35D - 326k, Deleted w/DUDMD Stage 2, Sutphin Trans tune, Comfort seat retrofit Fun car: 2004 ZHP 6mt - 256k miles, z4m FCAB, stock. Drift car: 2001 330i for sale
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