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#2688352 - 07/19/12 02:26 AM Re: Used engine oil instead of WVO? [Re: zyxelenator]
Texan4Life Offline


Registered: 01/28/10
Posts: 2264
Loc: Texas
I have heard of trucking companies mixing waste oil in their fuel @ 1%.

Supposedly to much waste oil (or straight veg oil) will cause buildup on the rings, valves, and injector tips. Also as mentioned some pumps are sensitive to viscosity.
_________________________
2005 Dodge Ram 1500, 5.7L
[Current Fill: PP 0w-20][Baldwin B2-HPG]

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#2989096 - 04/30/13 08:34 AM Re: Used engine oil instead of WVO? [Re: zyxelenator]
Sprocket Offline


Registered: 03/16/13
Posts: 34
Loc: Spain, Valencia
All the common rail are sensitives, and the rotary pumps made by Delphi-Lucas.
The Bosch PE (lineal) and the rotary VE runs perfect.
The Bosch VP 44 is to much sensitive to fuel viscosity, runs ok but makes excessive hot.
You can mix @ 3-5%, no issues.

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#3075454 - 07/24/13 09:22 PM Re: Used engine oil instead of WVO? [Re: Texan4Life]
matt922 Offline


Registered: 10/26/08
Posts: 129
Loc: Gulfport, MS
Originally Posted By: Texan4Life
I have heard of trucking companies mixing waste oil in their fuel @ 1%.

Supposedly to much waste oil (or straight veg oil) will cause buildup on the rings, valves, and injector tips. Also as mentioned some pumps are sensitive to viscosity.



my dad did it during the late 80s- early 90s when he maintained a ~40 truck fleet. The drivers hated it because they always had to carry a spare fuel filter with them just in case.. Unsure of the actual dilution ratio though..
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#3115823 - 09/05/13 02:00 PM Re: Used engine oil instead of WVO? [Re: zyxelenator]
Miller88 Offline


Registered: 04/09/08
Posts: 11801
Loc: Onondaga County
I've always wanted to get an old mech. injection diesel and run waste oil in it!

Up here, truck drivers are pretty used to carrying spare fuel filters. When they gel up, first thing you have to do is change the filter!
_________________________
I don't have nice things for a reason

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#3422650 - 07/12/14 01:12 PM Re: Used engine oil instead of WVO? [Re: zyxelenator]
sixtwoturbo Offline


Registered: 01/28/14
Posts: 33
Loc: Abbotsford, BC
See sig, I run 70-100% WMO/Transmission oil/Hydraulic oil and jet fuel all the time.

If you filter and prep it properly, then the risks are reduced. Sure, you will have to clean injectors at some point but big deal. I average 30 gallons a week and have done so since November and haven't touched her except to change the oil, which I reused, hehehehe. I also put a cleaner in the tank every other fill and run an additive every fill.

People do run it in newer diesels but IDI diesels will take anything you can throw at them and are cheaper to fix/maintain.
_________________________
1984 G20 Get A Way van, 6.2 diesel with a remote mounted turbo-HX35 with a billet 60mm HX40 comp wheel, 20 psi, running waste fuels and jet fuel.

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#3938145 - 12/05/15 05:15 PM Re: Used engine oil instead of WVO? [Re: zyxelenator]
GumbyJarvis Offline


Registered: 08/23/11
Posts: 1700
Loc: Killeen, TX
I've ran JP8 + 15w40 in Mraps and hmmwvs and lmtvs many times.

When an engine is built for diesel and you use jet fuel in it, things tend to leak due to lack o lube in fuel

No issues. Actually the MAXXPRO Started heck of a lot better in Afghan Mountains with the oil in the fuel when it got to sub freezing negative degrees and snow.

I always did 1 qt to 20L of fuel. New or used oil. Safety Kleen 15w40 mil spec oil
_________________________
16 Hyundai Veloster Turbo 1.6L 9k
Royal Purple 5w30 + OEM

05 Ford Ranger 2.3L 247k
QS Defy 10w40 + STP Blue

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#3938148 - 12/05/15 05:18 PM Re: Used engine oil instead of WVO? [Re: zyxelenator]
GumbyJarvis Offline


Registered: 08/23/11
Posts: 1700
Loc: Killeen, TX
Shoot. The 6.2 non turbo and 6.5 turbo hmmwv engines are noticably quieter with the mix. And they're pretty noisy engines.

Also, the cylinders have a easier "feel" to them while driving and accelerating
_________________________
16 Hyundai Veloster Turbo 1.6L 9k
Royal Purple 5w30 + OEM

05 Ford Ranger 2.3L 247k
QS Defy 10w40 + STP Blue

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#3938441 - 12/06/15 01:00 AM Re: Used engine oil instead of WVO? [Re: zyxelenator]
Shannow Offline


Registered: 12/12/02
Posts: 35005
Loc: Oz
Here's a cutapart of my last fuel filter, which had 15L of used engine oil in 3,000L of total fuel consumption.

http://www.bobistheoilguy.com/forums/ubb...in_#Post3875071

Given the novel design, you can see that it was capable of trapping most of the gunk, early into the flow path...not sure how it would have gone with double the waste oil or more.

That design, the fuel does multiple passes through the filter, the fuel cleans up really well in service.

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