Hello, I bought a 2007 Dodge 2500 4x4 Diesel 5.9L and have access to used vegetable oil and used motor oil but, I don't want to blow my engine. Can any one help me a tell me if I can run used vegetable oil in the tank or used motor oil in the tank or do I have to mix something with it, I only have 44,000 mile on my truck and I want it to last along time so if useing used vegetable oiul or used motor oil will hurt it I'm not going to do it so if you know any thing about this please help. Thanks Scotty

Is this an 5.9L or 6.7L '07? I've been doing used motor oil (WMO-waste motor oil) for a while now with my '05. I don't know how the newer 6.7L would handle it.

First you'll need to look at how many miles you put on when you drive.

If you drive alot, I would recommend that you do a conversion with two tank system and heated fuel lines. For system like this look into companies like Golden Fuel Systems, Greasecar, and Frybrid. There are very many out there, you'll need to decide on what system is best for you. This I've heard works great for veggie oil.

You can also make biodiesel with the waste veggie oil. But you will need to blend that down to 20% bio during colder months.

Both system required filtering and dewatering.

Otherwise there is the less accepted way of doing things. That is diesel blending. There is where you mix diesel and WMO or WVO (waste veggie oil), filter, dewater and add directly to your tank. This is what I do. I have a 55gal drum with a 5-1 micron filter sock where I mix WMO, diesel, power service in a gray bottle and 5% gas. Then it goes through a diesel pump through a 5 micron water filter into my tank.

Any which system that you go with, it is strongly recommend to run gauges first so you know how the engine is suppose to be. That way you can have early warn on an problem, like a stock lift pump that goes out like in my case.

Good luck and enjoy.

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2005 Black Sport QC 2500 auto 3.73 Swiss cheese Air box w/ Proguard 7 stock replacement filter, Airaid MIT, TAG, ATS ArcFlow, Quad Std X2, Quad Commander w/ fuel pressure kit, 4" BMRP muffler with Aero in place of CAT, '06 metal intercooler (10mm thicker than original plastic), AD II 165, Roadmaster active suspension, Goodyear LT 275/70R18

I have been doing a lot of testing & research with alternative fuels & energy .
I was for about 4 yrs. a fan of bio-diesel , but against WVO , from the info I was gathering .
After doing all this for a while , and looking closely at my fuel containers , I was noticing that in all crevices , there were an accumulation of thick - gummy residue of the bio-diesel , and since it is mandated min. 2% here in MN. , and talking with the guys that do maintainance on the pumps at filling truck stops , that I would no longer use bio-diesel .
As for WMO , I had seen premature wear on a number of parts , I would say that if your a chemist and have test equipment to clean up the WMO , such as PH , particles ect. , that you should not use either .
Your questions are so basic , that I would say that your about to ruin your truck , you need to do a lot of research , to know what your doing , a couple of questions here is not enough , just a suggestion , to save your truck .

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Build-12-93 Cummins WHC1 94 2500 4x4 SLT AT 3:55 265 R75 16 New Amsoil EAA cone air filter Amsoil 15-40 dualbypass found here about 01-05 DYNO at Mikes feb19 05 245.7HP 597TQ with coming out of lockup -so not sure about HP&TQ DiPrpocl trans temp EGT boost MBRP 4" alum exhaust Centramatics wheel balancers Solid Steel DSS track bar retro fit kit stabbed KDP bio-diesel 25%

Do what you like, no way I would ever consider WVO in a CR.

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"Brownie"
1997 2500 Ext.cab SLT, 4X4 auto, 3.54 gears, posilock, 98/99 steering conversion. New TC, lovin her again!

"Greenie"
1997 2500 Ext. cab SLT, 4X4, NV4500, 3.54 gears, Ready to install SB DD3250, built just 216 trucks after Brownie!

Isn't the CR a higher pressure which will foam bio-diesel...

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1995 Dodge,250K miles, regular cab dually,4X4,5 speed,4:10 gears,Wastegate blocked,15 degree timing,Polyurethane control arm bushings,BHAF,KDP Tabbed,Pyro & Boost,DSS,2003 trackbar upgrade,Steerring bushing,#10 plate,3K springs,215 injectors,Laser cut DV,Con OFE,full B100.

Mar 2008,
Dyno: 353HP/735 Ft Lbs

June 2008
Dyno:344HP/835 Ft Lbs

1978 Mercedes 450SL
1956 Chev 4 door Sedan
1977 T/A 400,4-speed

I thought if it was un-treated oil, not actual bio diesel you run the risk of crystallization of the glycerin in the rail. The CR engines need very clean and pure Biodiesel, not just dumping in waste oil.. Thats what I read anyway..

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97 2500 4X4 LWB CC SLT Laramie 5spd LSD 3.55.
Isspro EV's pyro/boost, #10 Plate, PEAK 3K GSK, AFC Spring, DDP III injectors, S300 Turbo, PEAK IC Boots, TAG III, South Bend 13-1.25" Con FE clutch, SCOTTY II-UNI, MBRP XP 4", KDP Tab, 16° Timing, SS DSS / 03TBK, Roda Deaco PAS. Espar D5WSC heater. B-Quiet sound deadening inside.
Dyno 09-2009 401 RWHP / 1050 Ft-lbs

'08 2500 4x4 MegaCab Laramie, 6.7, 68RFE, 3.73 LSD, S-67 R15ME.

Alberta Chapter #5 Prez... PM me for details...

i run wvo in my old 2grand diesel mercedes. won't do it in anything else i have. if during the heat of summer i might throw in a gallon of filtered wvo just to lube the inj. if something goes you will never recoupe your savings from running wvo or biodiesel.

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1993 ctd five speed 4x4 close to stock under 100k miles. 1978 gasser crew cab soon to be ctd five speed 4x4.
1991 ctd five speed 4x4 donor rig.