Adding oil to diesel

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I just got my truck last week and want to take care of it correctly from the start. I remember a guy saying to add a little motor oil on every fillup in order to keep the injector pump lubricated since they took the sulphur (which helped to lubricate the system) out of the diesel fuel for emissions. I know the lead in gasoline was to help lubricate the valves and cushion their closure. Anyone heard of adding oil to the diesel fuel?

[This message has been edited by RANDUCCI (edited 09-28-2000). ]

 

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Thats more of a myth, than fact. Problem was the seals were used to the sulphur, and expanded because of it. Less sulphur= less expansion= leaks. This was for the trucks that have been driven with the "old" fuel.
I wouldn't worry about it. Maybe a fuel conditioner/injection cleaner once in a while. Just buy a quality brand fuel.
If you've already made up your mind, and you're doing it anyway, use 2 stroke oil. At least it's made to be burnt, unlike standard engine oils, or ATF's. Bear in mind, if you have a catalitic converter, this will possibly clog it.
Good luck with the new ride. #ad


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98 Quad cab 4X4 2500 12 valve,5 speed,3. 54 rears, 8' bed. Boost and egt gauges but basicly stock except for a "properly adjusted" AFC. Uniden HR 2510, Texas Star 1200 amp. 55,000 Mi as of 8/21/00.
NRA life member. High power/IDPA.

 

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ever hear of "Marvel Mystery Oil"? my father used it for years, and I've known several boat capitans who also have used it with good results. It is supposed to help lubricate pump as well as help clean the injectors.

Just a thought, would seem better than just some oil, do not know what problems may show up by adding engine oil to fuel?

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1999 3500 quad cab, auto aero fendor trim and running boards,
bugflector II, K&N filter, Geno's monster tip

 

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Maybe the older oils burned okay but newer oils are designed not to burn. ATF was used for years but I wouldn't do it. Marvel Mystery oil seems okay and a little 2 cycle mix wouldn't bother anything either. If you want to add something to the fuel, why not try a real fuel additive that boosts octane and adds lubricants specific for deisel engines?

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4-sale or Trade
'99, 3/4, QC, SLT, 4x4, ISB, 5sp, 3. 5xlsd, tow pac, HD tcase, tow mirrors, camper pac, White over driftwood, Mist gray interior. With less than 19,000 miles.

 

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I would go with a real fuel additive. Something designed to clean and lubricate the innards, boost cetane, help with gelling, handle water and kill the critters living in the tank. There are lots to choose from. Just make sure it has no alchohol in it.

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Gregor Switca
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96 2500 4x4 auto SLT.
Torque is a beautiful thing

 

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Do an archieve search on fuel additives. Lots of info there. IMHO, the additives will do far more good than oil will. Get into the habit of fueling up at around say 400 miles. Once you know your average mpg's, add the recommended amount of additive before fueling. A little bit over or under won't matter. I save plastic bottles from gas line antifreeze, fill with the amount of fuel additive I would normally add and quickly dump it in. No fumbling at the pump.

Besides, with the Dodge fuel guage, you need to get used to watching your speedo so you know when to fuel up.

Like The patriot suggested, use quality fuel. Buy from somewhere that pumps a lot. Fuel collects moisture sitting in a tank.

 

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Why add transmission fluid/oil to your fuel? You are lowering the BTU of the fuel this way creating less heat in the combustion chamber. transmission fluid/engine oils contain detergents that varnish up when they burn. Ever see what varnish does to valves and piston rings? Cook yourself up some transmission fluid or oil in the skillet. See what is left after you get it to burn. The ash content alone is enough to carbon up your injector tips and exhaust valves and piston rings, let alone what the varnishing aspect is doing. All of this in a combustion chamber creating less heat spells trouble. If you think you have a lubricity problem, get a chemical additive that is formulated to fix that problem with out having adverse affects to your engine.

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Always ready to help!
2000 2500 Red Sport quad cab, 4x4, K&N, DDI's, straight piped, boost, pyro and fuel pressure gages, Power Edge, mean looking set of 33. 5" tires, Snap On diamond tool box, Marine Corps window sticker, Semper Fi!

1972 340 Cuda'. Original tripple Black, 340 car w/air. Good clean car, super stock springs, Weld Prostars, shaker hood, strong 340 with a 727/4000 stahl, 4. 56... . Bombs away!
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Add 4 Oz of Amsoil 100:1 2 cycle oil per 10 gallons of fuel and you will keep your fuel pump and injectors clean and well lubricated.

3 oz per 10 gal for your gasser.

 

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What does 2 cycle oil do for the cetane rating? If you're gona dump anything in the tank, why not dump something designed for diesel?

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Gregor Switca
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96 2500 4x4 auto SLT.
Torque is a beautiful thing

 

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100,000 miles and have never added any kind of additive. Also, never had any kind of fuel pump lubrication problem. Fuel that truck and let it run IMHO!

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98 Properly Valved 4x4 SWB QC ISB A/T Metallic Red w/ tan cloth interior, DC nerf bars, DC two piece mud-flaps, 275 h. p. injectors, Monroe Gas Magnums, Armor Tuff spray in bed liner, Goodyear Wrangler ATS 285/75r/16, BD Heavy Duty Valve body. Walker 21468 thru flow muffler,
Cobra 29 NWST CB.

 

[Archive]

For as expensive as this fuel system is, why on earth would you add "anything" to it that wasn't specifically formulated for diesel?

Unless you’re an expert on how different lubricants and fuels react with each other, I wouldn't screw with it. Pay the 1. 70 per gallon (or whatever is where you are)and add the appropriate fuel conditioner when needed (i. e. ; cold weather conditions, microbial concerns, etc).

Not sure about diesel injection, but some if not many of the gasser injectors have protective coatings that can be damaged using certain types of fuel injection cleaners and conditioners. That’s just one example.

These aren’t your father’s carburated or throttle body injected engines anymore.

Further note: I have a friend with a VW GTI VR6 that had his entire fuel system warranty voided from the gas cap to the injectors from using octane boost additives. Yes he had a problem, they fixed it once, but it failed twice, he fixed it the second time as the fuel was tested and the response was too bad so sad.

Just a thought.