Is a small amount of lube oil in diesel tank a problem?

[QBhoy]

Todays Diesel is tested specifically for Lubricity and additives put when needed. The other factor is that a common addition to Gas Oil (Diesel) is LCO .... Light Cycle Oil ..... nearest equivalent you could find is Sewing Machine Oil ....

I do not advise adding further Lub oil to diesel in your car ..... especially if you are soon to have emissions test.

Not great in modern cars or common rail engines. Think I said as much above.

 

[PabloPicasso]

I was just going to take my old engine oil to the council tip and put it in their recyling tank.

Perhaps i should repurpose it as fuel...

Too much waste these days when we can recyle and reuse...

 

[westernman]

I was just going to take my old engine oil to the council tip and put it in their recyling tank.

Perhaps i should repurpose it as fuel...

Too much waste these days when we can recyle and reuse...

Don't do it just before an emissions test!

 

[fisherman]

So could it go in the heating oil? I am severely miffed at all the 17litre oil changes I carefully took to the recycling tank. With a 1000 lt fuel tank, would have been no problem.

 

[Refueler]

So could it go in the heating oil? I am severely miffed at all the 17litre oil changes I carefully took to the recycling tank. With a 1000 lt fuel tank, would have been no problem.

I have gallons of the stuff ..... I use it to lub all sort of gear .... and odd bits go in boat fuel tank ...

 

[Halo]

My old Volvo engine needed a squirt of engine oil squirting down the air inlet to increase compression so it would start. No problem in several years.
I agree with others that a small percentage of clean engine oil in the fuel will not cause a problem.

 

[NormanS]

For the big old Gardner engine that I had in a previous boat, the instruction manual suggested, particularly if using paraffin (kerosene) or a mixture of that and diesel, to strain the old sump oil (5 gallons), and to add it to the fuel as lubricant.
The Lister auxillary engine in that boat, was hand started, and had a small cylindrical chamber with a plunger, to introduce lub oil into the combustion chamber, to ensure starting in very cold conditions. The bigger and slower revving the engine is, the less fussy they are about fuel. Bring on the chip pan oil!

 

[Refueler]

For the big old Gardner engine that I had in a previous boat, the instruction manual suggested, particularly if using paraffin (kerosene) or a mixture of that and diesel, to strain the old sump oil (5 gallons), and to add it to the fuel as lubricant.
The Lister auxillary engine in that boat, was hand started, and had a small cylindrical chamber with a plunger, to introduce lub oil into the combustion chamber, to ensure starting in very cold conditions. The bigger and slower revving the engine is, the less fussy they are about fuel. Bring on the chip pan oil!

The problem with Kero / Paraf ... is they are what we term 'dry' ... it means they are lacking in lubrication properties .... and this is why a touch of lub can be good if you use Kero / Parif to dose the diesel.
As Sulphur was reduced in diesel itself - the lubrication part of diesel for pumps also reduced - bringing in the reqt to test for Lubricity ... in early days of ULSD - it was a test conducted on literally every sample taken ... Lubricity additive injected to bring up to specification, over time the information built up and lubricity was treated as a standard element.