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Diesel in gas vehicle question

Posted on 12/18/17 at 8:41 am
Posted by AlxTgr
Kyre Banorg
Member since Oct 2003
81604 posts
Posted on 12/18/17 at 8:41 am
One of our employees just told me she put about $4 worth of diesel in her gas vehicle before realizing her mistake. She then switched to gas and filled it the rest of the way. Yukon, so I'm guessing 21 gallons?

How screwed is she?
Posted by CFDoc
Member since Jan 2013
2093 posts
Posted on 12/18/17 at 8:45 am to
Not too bad.

My wife did worse than that to my old ridgeline. A few hiccups but made it through.

Might be a good idea to get a fuel injector, pump, and line clean in a week or two.
Posted by geauxcats10
AP
Member since Jul 2010
4195 posts
Posted on 12/18/17 at 8:46 am to
How is this even possible?.... the diesel nozzles are larger than gas ones.
Posted by X123F45
Member since Apr 2015
27348 posts
Posted on 12/18/17 at 8:47 am to
With new diesel, probably will run better in a week or so
Posted by FelicianaTigerfan
Comanche County
Member since Aug 2009
26059 posts
Posted on 12/18/17 at 8:52 am to
Might smoke a little but don’t think it will be catastrophic
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
66763 posts
Posted on 12/18/17 at 8:52 am to
Probably won’t matter.

*dont call me if it blows up though
Posted by HotKoolaid
Member since Oct 2017
444 posts
Posted on 12/18/17 at 9:07 am to
quote:

How screwed is she?



She's probably screwed but there is tiny chance she's not too screwed. Diesel in gasoline lowers the octane rating. I don't remember by how much so she's going to need to look that up. If she pumped 93 for the rest of the tank it might be fine, but if she pumped 87 you will for sure need to park and empty the tank.

Sounds like she already drove the truck, but she should not have.
This post was edited on 12/18/17 at 9:09 am
Posted by upgrade
Member since Jul 2011
12977 posts
Posted on 12/18/17 at 9:15 am to
I would have thought that diesel would raise the octane rating. Being diesel engines have much higher compression than gas engines.
Posted by BigDropper
Member since Jul 2009
7608 posts
Posted on 12/18/17 at 9:16 am to
quote:

She

Women...
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
66763 posts
Posted on 12/18/17 at 9:18 am to
Without nerding out too much on how all this shite works, she basically just watered down the gas with something that’s soluble in it. If she goes easy on the skinny pedal she should be fine. New engines with knock sensors and shite should let you know if there’s a problem.

ETA: I would run some high octane fuel with solvents in it for a couple tanks and drive it like I stole it after a couple fill ups. The Diesel is going to leave deposits.
This post was edited on 12/18/17 at 9:20 am
Posted by Chuker
St George, Louisiana
Member since Nov 2015
7544 posts
Posted on 12/18/17 at 9:20 am to
quote:

How is this even possible?.... the diesel nozzles are larger than gas ones.




she just thought it was one of those stations where you have to use a funnel to fill up.





FTR I think she's fine. I'd run it with no hesitation.
Posted by SCndaBR
BR
Member since Dec 2015
517 posts
Posted on 12/18/17 at 9:24 am to
That's would be like what 1 maybe 2 gallons of diesel? I'd just drive day by day and fill it up with 93 octane each day until you have replenished the capacity with gasoline. Just keep diluting
This post was edited on 12/18/17 at 9:29 am
Posted by CFDoc
Member since Jan 2013
2093 posts
Posted on 12/18/17 at 9:32 am to
quote:

Being diesel engines have much higher compression


Diesels compress air, not so much the fuel.
Posted by upgrade
Member since Jul 2011
12977 posts
Posted on 12/18/17 at 9:33 am to
quote:

Diesels compress air, not so much the fuel.



I see now.
Posted by AlxTgr
Kyre Banorg
Member since Oct 2003
81604 posts
Posted on 12/18/17 at 9:45 am to
quote:

If she pumped 93 for the rest of the tank it might be fine
She did.
Posted by baldona
Florida
Member since Feb 2016
20392 posts
Posted on 12/18/17 at 10:05 am to
quote:

How is this even possible?.... the diesel nozzles are larger than gas ones.


This! How is it physically possible?

I had a lady not too long ago walk over and ask me why the pump wouldn't fit in her car, if I knew what she was doing wrong. I told her the diesel pumps are larger.

So I'm guessing the coworker didn't put the nozzle into the hole but simply shot it in from outside? lol. You gotta tell us more...
Posted by Coon
La 56 Southbound
Member since Feb 2005
18492 posts
Posted on 12/18/17 at 10:08 am to
I did the opposite once. Full tank of premium gas when gas was expensive. Wasn't a cheap tow and fix either.
Posted by baldona
Florida
Member since Feb 2016
20392 posts
Posted on 12/18/17 at 10:14 am to
quote:

did the opposite once. Full tank of premium gas when gas was expensive. Wasn't a cheap tow and fix either.


Yeah but a reg gas pump fits easily into a diesel tank right? Is there a preventative measure to prevent gas into diesel like there is to prevent diesel into gas?
Posted by AlxTgr
Kyre Banorg
Member since Oct 2003
81604 posts
Posted on 12/18/17 at 10:20 am to
quote:

How is this even possible?.... the diesel nozzles are larger than gas ones.


This! How is it physically possible?
She swears it was a green handle, and it fit. When she looked down at the pump, the price was showing in the diesel spot, and all three gas spots were blank. I found this as well:

quote:

The nozzle on diesel pumps is supposed to be larger so that it cannot fit into the filler pipe on a vehicle tank designed for gasoline. However, the larger diameter diesel nozzles are not an actual requirement, and many diesel pumps at auto islands have been fitted with standard gasoline nozzles.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
66763 posts
Posted on 12/18/17 at 10:21 am to
Some pumps have small diesel nozzles.
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