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#4503219 - 08/31/17 11:00 AM Gasoline Into Diesel Truck - Oops
George7941 Offline


Registered: 05/10/05
Posts: 2158
Loc: Toronto, Canada
Subject vehicle is a 1999 Freightliner FL70 with the Cummins ISB, equipped with a VP44 distributor injection pump. Driver calls me yesterday evening, he is at a gas station and pumped in 2 litres of gasoline into the tank and stopped when he noticed his error. Tank has approximately 60 litres of diesel in it.

Since gasoline is lighter than diesel , I figured the gasoline would mostly stay on top and not get picked up by the transfer pump. I told him to carefully drive back to home base which was about a mile away. I went and pumped out 18 litres of fuel from the top of the tank after the truck had been sitting for about two hours, added about 3 litres of TCW3 oil for lubricity and told the driver to fill up before using the truck again and called it a day.

The only thing I could have done better would have been to have gone directly to the gas station and pumped out some fuel from the top (or all of the fuel). But it was rush hour and it would have taken me an hour to get to the gas station and that busy gas station in the middle of the city would not appreciate a big truck being parked there for an hour plus.

So far the truck has not exhibited any symptoms from having been subjected to this abuse.

Anything else I could have done?
_________________________
2006 GMC Sierra 4.3l, NV3500,G80 , Mobil 1 5W30, Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.

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#4503222 - 08/31/17 11:03 AM Re: Gasoline Into Diesel Truck - Oops [Re: George7941]
Nick1994 Offline


Registered: 02/19/13
Posts: 10097
Loc: Phoenix, AZ
I wouldn't have done anything to it besides fill it up the rest of the way with diesel.
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2015 Hyundai Sonata 2.4L 79k PU 5w30 & OEM
2000 Toyota Camry 2.2L 228k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 146k M1 HM 10w40 & Fram Ultra

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#4503264 - 08/31/17 11:37 AM Re: Gasoline Into Diesel Truck - Oops [Re: George7941]
newbe46 Offline


Registered: 01/19/17
Posts: 202
Loc: Ontario, Canada
I think a little gasoline in a diesel engine is fine but not vice versa. I've seen Wold War II documentary about the Russian troops putting vodka in the diesel fuel tank to help the engine starts easier. I think gasoline will have the similar effect.
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#4503275 - 08/31/17 11:45 AM Re: Gasoline Into Diesel Truck - Oops [Re: newbe46]
George7941 Offline


Registered: 05/10/05
Posts: 2158
Loc: Toronto, Canada
Diesel is an oil and lubricates the insides of the injection pump. Gasoline does not and large amounts will certainly damage the pump.

On the latest diesels, filling up with gasoline can result in a $20000 bill because so many expensive components have to be replaced
_________________________
2006 GMC Sierra 4.3l, NV3500,G80 , Mobil 1 5W30, Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.

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#4503276 - 08/31/17 11:47 AM Re: Gasoline Into Diesel Truck - Oops [Re: Nick1994]
Srt20 Offline


Registered: 07/14/14
Posts: 494
Loc: Wisconsin
Originally Posted By: Nick1994
I wouldn't have done anything to it besides fill it up the rest of the way with diesel.

X2 the vp-44 wouldnt have even noticed.

my wife FILLED my pickup truck up with gas. And it was nearly empty, because she waits until it fuel range says 0 miles til empty. She called me before starting it. I told her to start it and drive it away from the pumps and find a place to park. I went and pumped out 32 or so gallons of gas and filled it up with diesel. Truck has common rail high psi injection.

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#4503290 - 08/31/17 11:55 AM Re: Gasoline Into Diesel Truck - Oops [Re: George7941]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
I don't think a 30:1 ratio of diesel fuel to gasoline would have had much effect.

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#4503292 - 08/31/17 11:56 AM Re: Gasoline Into Diesel Truck - Oops [Re: George7941]
Kamele0N Offline


Registered: 02/09/15
Posts: 2038
Loc: Slovenia
Put some 2stroke oil into the tank....vp44 is a quite sensitive pump (google audi vp44 problems)
_________________________
2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD various 10w40

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#4503303 - 08/31/17 12:04 PM Re: Gasoline Into Diesel Truck - Oops [Re: Kamele0N]
George7941 Offline


Registered: 05/10/05
Posts: 2158
Loc: Toronto, Canada
That is what TCW3 oil is - 2 stroke oil. I have been using 2 stroke oil in this truck since new and still have the original injectors at 15000 hours.
_________________________
2006 GMC Sierra 4.3l, NV3500,G80 , Mobil 1 5W30, Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.

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#4503341 - 08/31/17 12:45 PM Re: Gasoline Into Diesel Truck - Oops [Re: George7941]
Nick1994 Offline


Registered: 02/19/13
Posts: 10097
Loc: Phoenix, AZ
Originally Posted By: George7941
Diesel is an oil and lubricates the insides of the injection pump. Gasoline does not and large amounts will certainly damage the pump.

On the latest diesels, filling up with gasoline can result in a $20000 bill because so many expensive components have to be replaced
2 liters of gasoline in a 75 gallon tank is almost nothing.
_________________________
2015 Hyundai Sonata 2.4L 79k PU 5w30 & OEM
2000 Toyota Camry 2.2L 228k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 146k M1 HM 10w40 & Fram Ultra

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#4503367 - 08/31/17 01:07 PM Re: Gasoline Into Diesel Truck - Oops [Re: Nick1994]
George7941 Offline


Registered: 05/10/05
Posts: 2158
Loc: Toronto, Canada
The $20000 scenario is with the latest pickups where the tank is filled with gasoline and the truck driven to failure. The CRD high pressure pump and injectors are very expensive.
_________________________
2006 GMC Sierra 4.3l, NV3500,G80 , Mobil 1 5W30, Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.

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#4503378 - 08/31/17 01:14 PM Re: Gasoline Into Diesel Truck - Oops [Re: newbe46]
Char Baby Offline


Registered: 05/25/05
Posts: 10017
Loc: ROCHESTER, NY
Originally Posted By: newbe46
I think a little gasoline in a diesel engine is fine but not vice versa. I've seen Wold War II documentary about the Russian troops putting vodka in the diesel fuel tank to help the engine starts easier. I think gasoline will have the similar effect.


I have heard just the opposite!


Edited by Char Baby (08/31/17 01:15 PM)
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#4503382 - 08/31/17 01:23 PM Re: Gasoline Into Diesel Truck - Oops [Re: George7941]
Chris142 Offline


Registered: 06/05/03
Posts: 16817
Loc: Deplorable in apple valley, ca
The gas will blend with the diesel. It wont float as you suggested
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#4503405 - 08/31/17 01:50 PM Re: Gasoline Into Diesel Truck - Oops [Re: George7941]
DoubleWasp Offline


Registered: 05/21/12
Posts: 5236
Loc: Fort Lauderdale, FL
We've handled quite a bit of "gas in diesel" scenarios.

Even when run on a mix to shutdown, we just pump the tank empty and start. Never an issue.

Gas and diesel do mix very well.
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07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
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#4503417 - 08/31/17 01:59 PM Re: Gasoline Into Diesel Truck - Oops [Re: George7941]
mightymousetech Offline


Registered: 04/03/17
Posts: 1444
Loc: Ontario, Canada
I know people that put a couple liters of gas in with their diesel intentionally in the winter to help it start easier.
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Acura Tech
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#4503423 - 08/31/17 02:02 PM Re: Gasoline Into Diesel Truck - Oops [Re: George7941]
Kamele0N Offline


Registered: 02/09/15
Posts: 2038
Loc: Slovenia
Yes....that worked for russian T34...up to the german golf mk.2 with 1.6D engine....

I would not play that with "modern" and especially modern diesels
_________________________
2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD various 10w40

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