Adding 2 stroke oil to diesel

[Loom]

Browsing the Audi forums I came across the practice of adding 2 stroke oil when filling up. Some swear by it, saying it makes the engine quiter, improves economy etc. Others say you're just messing about doing that and may even clog the injectors. I'm siding with the latter.

Just for interest's sake, do any of you add 2SO to diesel?

 

[herr bmw]

i dont add anything to my diesel vehicles

 

[RAArmstrong]

When I had my TDI I did it as well... 500ml to every tank... Added lubrication to the fuel system... The lower the sulfur content in the diesel the less lubrication... Was recommended to me by a Mercedes Tech in order to prolong my injector life

 

[ChefDJ]

I add nothing to my diesel. Once added injector cleaner, and never again.

Use 50ppm (10ppm if available) to keep the system clean and that's that :thumbs:

 

[Nikhil]

I add nothing to my diesel. Once added injector cleaner, and never again.

Use 50ppm (10ppm if available) to keep the system clean and that's that :thumbs:

what happened chef :fencelook:

 

[RAArmstrong]

I add nothing to my diesel. Once added injector cleaner, and never again.

Use 50ppm (10ppm if available) to keep the system clean and that's that :thumbs:

what happened chef :fencelook:

I'm wondering too :fencelook:

 

[Nikhil]

I add nothing to my diesel. Once added injector cleaner, and never again.

Use 50ppm (10ppm if available) to keep the system clean and that's that :thumbs:

what happened chef :fencelook:

I'm wondering too :fencelook:

most likely petrol injector cleaner :fishwack:

 

[Fordkoppie]

Why?

You are already burning oil. It will contaminate the cats faster

 

[RAArmstrong]

I add nothing to my diesel. Once added injector cleaner, and never again.

Use 50ppm (10ppm if available) to keep the system clean and that's that :thumbs:

what happened chef :fencelook:

I'm wondering too :fencelook:

most likely petrol injector cleaner :fishwack:

:biglol:

 

[Nikhil]

not if you dont have cats :rollsmile:

 

[DieselFan]

not if you dont have cats :rollsmile:

+1

Never added that before but have used some Wurth injector cleaner in the 330d and some liquimoly product in my 320d.

 

[Blue Shirt]

When I had my TDI I did it as well... 500ml to every tank... Added lubrication to the fuel system... The lower the sulfur content in the diesel the less lubrication... Was recommended to me by a Mercedes Tech in order to prolong my injector life

This one of the great fallacies of diesel fuel which is perpetuated by internet/email rumours and conjecture.

Sulphur does not lubricate the fuel system. Sulphur in diesel is bad for the environment (causes acid rain from exhaust emissions), and bad for the oil in your engine (forms sulphuric acid which breaks down the engine oil that protects the cylinder walls).

The process of removing sulphur from diesel also removes the paraffinic waxes that are present in crude oil, which is what really lubricates the fuel system. In South African refineries, other additives are then put back in after sulphur removal to restore the lubricity of the fuel.

All diesel fuel manufactured and sold in SA conforms to a SABS lubricity standard of 460 under HFRR testing (basically a wear test). That is all 500ppm, 50ppm and 10ppm diesel all have the same lubricity properties.

If you are adding 2-stroke oil to your diesel, you are just wasting money. No motor manufacturer endorses the use of 2-stroke oil as a diesel additive. Some may even void your warranty if fuel system problems occur and they see you have been adding 2SO.

2-stroke oil is designed for 2-stroke engines, don't put it in you 4-stroke diesel engine.

 

[moranor@axis]

Rather use something designed for the job:

Restores and boosts power & performance, improves accelleration and throttle response
Helps remove hesitations
Increases cetane rating of diesel by up to 5 numbers
Cleans injectors and entire fuel system
Maintains a clean engine and fuel system if used continuously
Removes deposits from combustion chambers, extending engine life
Reduces carbon formation, extending oil life. Cleaner oil means less wear and tear on the engine
Reduces diesel smoke
Improves cold starts
Reduces harmful emissions
Improves fuel economy
Adds lubricity to low sulphur diesel, lubricating fuel pumps and injectors
Protects engines and turbochargers - even when used with high sulphur diesel
Inhibits corrosion
Treats 1 tank up to 100 litres of diesel

I have it at R 90 a bottle

 

[RAArmstrong]

When I had my TDI I did it as well... 500ml to every tank... Added lubrication to the fuel system... The lower the sulfur content in the diesel the less lubrication... Was recommended to me by a Mercedes Tech in order to prolong my injector life

This one of the great fallacies of diesel fuel which is perpetuated by internet/email rumours and conjecture.

Sulphur does not lubricate the fuel system. Sulphur in diesel is bad for the environment (causes acid rain from exhaust emissions), and bad for the oil in your engine (forms sulphuric acid which breaks down the engine oil that protects the cylinder walls).

The process of removing sulphur from diesel also removes the paraffinic waxes that are present in crude oil, which is what really lubricates the fuel system. In South African refineries, other additives are then put back in after sulphur removal to restore the lubricity of the fuel.

All diesel fuel manufactured and sold in SA conforms to a SABS lubricity standard of 460 under HFRR testing (basically a wear test). That is all 500ppm, 50ppm and 10ppm diesel all have the same lubricity properties.

If you are adding 2-stroke oil to your diesel, you are just wasting money. No motor manufacturer endorses the use of 2-stroke oil as a diesel additive. Some may even void your warranty if fuel system problems occur and they see you have been adding 2SO.

2-stroke oil is designed for 2-stroke engines, don't put it in you 4-stroke diesel engine.

Learn something new every day, thanks :thumbs:

 

[ChefDJ]

Nothing happened. That's the point. Waste of money.

 

[DieselFan]

Rather use something designed for the job:

Restores and boosts power & performance, improves accelleration and throttle response
Helps remove hesitations
Increases cetane rating of diesel by up to 5 numbers
Cleans injectors and entire fuel system
Maintains a clean engine and fuel system if used continuously
Removes deposits from combustion chambers, extending engine life
Reduces carbon formation, extending oil life. Cleaner oil means less wear and tear on the engine
Reduces diesel smoke
Improves cold starts
Reduces harmful emissions
Improves fuel economy
Adds lubricity to low sulphur diesel, lubricating fuel pumps and injectors
Protects engines and turbochargers - even when used with high sulphur diesel
Inhibits corrosion
Treats 1 tank up to 100 litres of diesel

I have it at R 90 a bottle

Do you have big bottles? Can you ship for free when I order the rest of my goodies? I may also buy some oil as you're about R50 cheaper than my mech who sells Liquimolly.

Thanks Moranor

 

[moranor@axis]

Rather use something designed for the job:

Restores and boosts power & performance, improves accelleration and throttle response
Helps remove hesitations
Increases cetane rating of diesel by up to 5 numbers
Cleans injectors and entire fuel system
Maintains a clean engine and fuel system if used continuously
Removes deposits from combustion chambers, extending engine life
Reduces carbon formation, extending oil life. Cleaner oil means less wear and tear on the engine
Reduces diesel smoke
Improves cold starts
Reduces harmful emissions
Improves fuel economy
Adds lubricity to low sulphur diesel, lubricating fuel pumps and injectors
Protects engines and turbochargers - even when used with high sulphur diesel
Inhibits corrosion
Treats 1 tank up to 100 litres of diesel

I have it at R 90 a bottle

Do you have big bottles? Can you ship for free when I order the rest of my goodies? I may also buy some oil as you're about R50 cheaper than my mech who sells Liquimolly.

Thanks Moranor

any order over R600 gets you free shipping to CPTso yes can ship with the rest of your stuff for free :rollsmile:

 

[Nikhil]

Nothing happened. That's the point. Waste of money.

lol ooooooh just checking a chef messing with cars is a recipe for disaster :biglol:

 

[ChefDJ]

Nothing happened. That's the point. Waste of money.

lol ooooooh just checking a chef messing with cars is a recipe for disaster :biglol:

Mechanical virgin :fencelook:

 

[Philip Foglar]

It is an interesting topic and so many differing opinions - this practice is also quite firmly believed and especially by the various 4x4 communities. And this brings the more valid reason forward - the newer diesel 4x4's are all common rail and sensitive to diesel quality and as such the lubricity of the fuel. The problem is (as suggested) that these vehicles find themselves driving far out of civilisation in the sticks somewhere - then they are at the mercy of the quality of the fuel available at some small lonely filling station where the chances are that they are thinning the fuel out with Paraffin which is cheaper. Of course, this is most likely more rumours than anything else. The idea is that the sulphur is a lubricant I reckon still holds true to a point - the older agricultural type diesels were designed with higher sulphur content in mind and once the low sulphur diesel became available if used they tended to suffer from failed fuel pumps and injectors. The idea of adding a small amount of 2 stroke oil is simply that it helps lubricate the fuel system and since it is an oil burner to begin with, the oil simply forms part of the combustion process. Also an interesting detail - the idea is to use a good 2 stroke oil but not fully synthetic, you want it to have a lower combustion temperature so that it does not struggle to burn.

But in the end I reckon in most cases our fuels are clean enough and have enough lubricity for fuel systems, and with cats the use of 2 stroke oil is not the best idea, so better to use a proper diesel injector cleaner every now and again.

Just a side note: Many many years ago my late father's old 350 SE Merc had a terrible stumbling problem when pulling off from robots - the agents took a look and simply told him that the injectors (all 8) would need to be replaced. Granted, back then I don't think they had the technology to clean injectors like they do now. Anyway, he eventually was given a tip by a friend of his who owned and had a garage - pour 500 ml 2 stroke oil into a full tank of fuel which would sort the injectors out. Well, he gave it a shot and it indeed sorted out this stumbling problem! Again, I reckon while it worked, it was an older technology engine without cats and so on, so a good injector cleaner would have probably worked too.

It really is a case of, this may still be a very valid practice, but before you put anything in your car's tank, research it thoroughly first!! Last thing that you want to do is cause a bigger problem down the line!