Burning your Oil (instead of changing)

[Crazy Dazz]

One of the sites I worked on, they converted the trucks to burn their oil.
ie such that the oil was continuously being replenished and never changed.

Obviously that works best in a diesel.

Could you implement that on a petrol engined car?
Would the engine management cope/ adapt?

How would you implement it?
Where would you take the oil feed from, bottom of sump or bottom of oil-filter?
How would it be injected? Presumably it would clog existing petrol injectors. Could it be rigged to spray into in the manifold at WOT?

And what would the effect be?
The advantage on the fleet was burning the oil inplace of diesel, but mostly to avoid the cost of changing and disposing of the oil.

Not sure, but I imagine the filters were still changed, as they would still have caught all the dirt and particulates.

[Itsme]

In my opinion sounds illegal and contravenes EPA laws.

[XByoot]

Originally Posted by Officemanager

In my opinion sounds illegal and contravenes EPA laws.

Yep, and the O2 sensors and Cat would be none too happy either.

[.:4:.]

That sounds strange but also the only petrol motor I can think of that burns oil by design is a 2 stroke petrol motor. And also diesel (I'm going to use that as my sort of example as its closer to oil then petrol) burns differently then petrol so there are big differences in how a diesel and petrol motor need to be constructed to get the most out of the different fuel. Compression ratios and fuel pressure being a factor but I'm not all over how stuff like that works. You probably could somehow inject a mix of sump into the manifold with petrol and the car would probably run but probably not as well as on petrol alone. And isn't 5L of engine oil more expensive then 5L of petrol?

[Venomous1]

A pretty worn out engine would burn it's own oil but only to it's detriment.

[.:4:.]

Originally Posted by Venomous1

A pretty worn out engine would burn it's own oil but only to it's detriment.

Shot rings or a cracked piston would also lose compression so that's a tad different to oil injection (yeah I know that's a 2 stroke boat or bike thing but it seems closer to the ops query then running a shot motor)

[BPXR6T]

My old man was a firm beleiver in this. Not once in his entire life did he change the oil in his smokey old XA fairmont.

[SumoDog68]

Some car companies are well ahead in this oil burning scenarios - direct injected engines especially.

[malazn mafia]

Once saw somewhere on the interwebs a device (industrial heater?) that burns any sort of oil you give it, even waste engine oil, and it would put out some serious heat. Once toyed with the idea after experiencing a bill shock of $2k after moving into a new house

[Trendseeker]

Seems like a lot of trouble to avoid changing the oil once in a while. The cost to change the oil is fairly small. Maybe they just want to keep the trucks moving 24/7? I’m with the OfficeManager; it sounds dodgy.

[Crazy Dazz]

Originally Posted by Trendseeker

Seems like a lot of trouble to avoid changing the oil once in a while. The cost to change the oil is fairly small. Maybe they just want to keep the trucks moving 24/7? I’m with the OfficeManager; it sounds dodgy.

Have to change the oil frequently due to continuous operation in a dirty environment. Cost including Labour, downtime, and disposal is signifiant.
Plus, I think the diesels could burn it quite well, especially in minute concentration.

In theory, if properly tuned, even a petrol engine should be able to clean it up with a Cat, but in practice not sure how.

NB: On another site we got rid of all our waste oil, included reclaimed, in ANFO

[Burnout]

In 1924, my old man went out to western NSW to work on a large sheep station as a Jackaroo.
The owner only brought Ford Model T's, he brought a new one every few years and gave his old one to the manager. The manager gave his old one to the overseer and the overseer gave his old one to the outstation boss.
In turn the outstation boss gave his old one to the Jackaroos.
In town on a Saturday night, they reckoned you could always here the Jackaroos coming to town form a pretty fair distance as the big ends were slapping pretty well by the time they got to drive it. You see, the Boss always said, it had oil in it when I brought it and I don't see why it doesn't have oil in it now.

[OzJavelin]

My Suzuki T500 burns all its oil ..

[mike_nofx]

I think a much better option is to have the old oil squirt into the rear tyres when stopped at lights so that you can safely burn it off during take off.

[Maka]

Originally Posted by OzJavelin

My Suzuki T500 burns all its oil ..

Some trucks have two strokes (diesels) too.

cheers, Maka

[roKWiz]

Originally Posted by Maka

Some trucks have two strokes (diesels) too.

cheers, Maka

Yes my 2 stroke 6V53 Detroit, I guess if the injector rack sticks in the wide open position it would burn oil. (and everything else)

[cheap]

A small amount of two stroke oil per tank of diesel helps with the injectors. But purposely adding oil to the fuel with the intent of simply burning it away ... you do realise pistons have oil and compression rings to specifically stop oil and the combustion process from interacting.

[roKWiz]

I use my used engine oil on the hardwood fence posts to stop termites and them drying out.
Three of my trucks use used filtered canola oil mixed with diesel to produce B50-B90 depending on the season.

[Kil4Collingwood]

My work ute, a 2002 VU commodore has burned it's oil off since new

[ebv8]

mitsubishi have been doing this for years, been behind an early magna or pajero?

[Vesper Martini]

Not sure of the benefits, happy to be proven wrong but:
- If its using the engine oil you would need to continuously top up the engine oil, of risk running low.
- surely dirty engine oil in the fuel wouldn't be efficient, and would soon clog a fuel filter.
- oil filters would still need changing wouldn't they?
- having working in servicing trucks, there's a lot more checks & greasing that are done as part of the oil change -so it still needs a service.
- Cant be good for emissions almost certainly illegal.

[Vesper Martini]

Originally Posted by ebv8

mitsubishi have been doing this for years, been behind an early magna or pajero?

Craptivas & Cruzes are taking over where the Magnas left off

[ivorya]

Originally Posted by Officemanager

In my opinion sounds illegal and contravenes EPA laws.

Depends if you intend to drive on public or private land?

[Crazy Dazz]

Originally Posted by Bevsta007

Not sure of the benefits, happy to be proven wrong but:
- If its using the engine oil you would need to continuously top up the engine oil, of risk running low.
- surely dirty engine oil in the fuel wouldn't be efficient, and would soon clog a fuel filter.
- oil filters would still need changing wouldn't they?
- having working in servicing trucks, there's a lot more checks & greasing that are done as part of the oil change -so it still needs a service.
- Cant be good for emissions almost certainly illegal.

1. Yeah, not sure how it was done in practice, maybe a separate reservoir that fed clean oil in at the same rate. Keep in mind that using service trucks, its easy to top UP fluids and oils, as opposed to draining.
2. I imagine it was taken from the clean side of the oil filters
3. Oil Filters generally changed half as often, and could be extended by doubling up
4. scheduled maintenance still required, but less often than oil change
5. in a diesel engine, I doubt it would make significant difference to emissions. Petrol engine would be much harder I'd imagine

[Itsme]

Originally Posted by ivorya

Depends if you intend to drive on public or private land?

If vehicle is registered EPA laws apply, if unregistered and public complaint EPA laws apply.
You should know when pollution is a problem all Government & local authorities will act against you.

[Junkyard-Dog]

Just stick to 2 strokes next time.

[ivorya]

Originally Posted by Officemanager

If vehicle is registered EPA laws apply, if unregistered and public complaint EPA laws apply.
You should know when pollution is a problem all Government & local authorities will act against you.

I ask as Toyota are having major issues with their Hilux atm with the PDF clogging up. This due to the 5th injector in the wrong place being clogged.

Toyota's answer is to remove the PDF and EGR system.
This is happening now on all mine sites(Private land) as well as yodas driven in cities (public).

[Itsme]

Originally Posted by ivorya

I ask as Toyota are having major issues with their Hilux atm with the PDF clogging up. This due to the 5th injector in the wrong place being clogged.

Toyota's answer is to remove the PDF and EGR system.
This is happening now on all mine sites(Private land) as well as yodas driven in cities (public).

Just because Toyota advises removal does not mean they are correct and in the end the owner of the vehicle/s is responsible for any breaches of EPA laws, I still stand by my previous post.
You must remember cars manufacturers must abide government rules regarding emission laws, any modifications to these are prohibited.

[ivorya]

Originally Posted by Officemanager

Just because Toyota advises removal does not mean they are correct and in the end the owner of the vehicle/s is responsible for any breaches of EPA laws, I still stand by my previous post.
You must remember cars manufacturers must abide government rules regarding emission laws, any modifications to these are prohibited.

According to the article/video review, they are allowed as they are on private land.

On public land however......

[Junkyard-Dog]

They burn oil in Formula 1 as a power additive.