Just been reading this article in the link below on putting two stroke oil in diesel engines.argee a forum member put me on to this arfter reading this might be worth

trying. Ray said it makes the engine run quieter and smoother.any comments welcome.

bill

http://www.brick-yard.co.uk/forum/adding-2-stroke-oil-to-diesel-tank-read-this_topic37935.html

The DPF might not like it.

I would not use on modern engines, too many sensors and things that could get clogged up by it.

Agree on the dpf potential problem. The CR engine is VERY fussy about no ash oil. I can't imagine why two stroke oil would be no ash.

it will work fine on non DPF equipped vehicles and at least one Fabia member tried it. I would not use it with a DPF equipped vehicle as the oil is not completely burnt and will contaminate the DPF very quickly.

Stick to correct grade of oil, price wise not a lot to gain is it ????

Stick to correct grade of oil, price wise not a lot to gain is it ????

Don't understand this reply????

2T oil is added to the Fuel, not recomended for CR DPF, in one of the linked write ups it stated that a thin blue haze visible on hard accelerateion this proves that the exhaust gasses are containing extra oil this will kill a DPF.

Only the correct engine oil must be used, 507 00, I wish all dealers would clearly state on invoice the oil used, it appears that some are still using oil for PD engines. If your PDF fails due to wrong oil causing excess ash your DPF warranty is voided, and your dealer is most unlikely to accept responcibility for using wrong oil, the usual answer is it is your job to ensure the correct oil has been used, or you have had it changed somewhere else. If in doubt insist on the invoice having the make and type of oil used clearly printed on it they should be pleased to do it to prove all is correct, if they wont go somewhere else.

Stick to correct grade of oil, price wise not a lot to gain is it ????

The OP is not talking about using it as engine oil, but as a diesel fuel additive.

The DPF might not like it.

From the article in bill2's post:

"In other words, the 2-stroke oil has a much lower ash-content as diesel, when burned. This proven fact delays the DPF (diesel particulate (soot) filter) to clogg, and the "burn free" process of the DPF will be much less. One more information: in Germany we have to present our cars every 2 years to the TUV -Technical Supervision Organisation - who will check, amongs others, the pollution of petrol and diesel engines.

The measured cloud-factor of a diesel engine without use of 2-stroke oil has been 0,95. The same factor with the use of 2-stroke oil has been 0,47 - reduction of nearly half of the soot particles."

Having researched quite a few 2-stroke oils, I only use "Carlube 2-Stroke Marine Engine Oil" (made for outboard boat engines) at the rate of 250ml per tankful, squirted in immediately prior to filling up - to ensure the best chance of complete emulsion.

So far, the engine definitely runs more quietly (sufficient for my wife to spot the difference - that's a complimentary statement, BTW!) and I have never had any DPF problems. The linked article suggests that the DPF might actually benefit from such an additive, but I have no opinion on that.

I forgot to take some of the oil with me on a trip abroad and it took a complete tankful after a refuel for the engine note to return to "normal," which is, in any event, quiet in the first place.

I've now driven 15,000 miles, of which >10,000 were with the above additive. I'm not suggesting that anyone else should use it, but I will certainly continue to. I mentioned it to Bill as he has a PD engine, which is inherently more noisy than a common rail.

I get my oil via eBay, but I'll refrain from saying where, publicly, in case that's thought of as a commercial posting. PM for details if required.

Ray

I wouldn't. Not on a new CR engine anyway.

I wouldn't. Not on a new CR engine anyway.

Because?

Ray

I think the engines are designed to run on diesel not diesel mixed with two-stroke oil.

I just think that if it did make that much of a difference companies would be selling it as something else and suggesting to put some in your fuel tank.

In theory yes it should give better lubrication to some of your engine internals but I just don't trust something that sounds too good to be true.

I have no real hard evidence either way so why not give it a go but if something breaks in your engine as a direct result of not using the correct fuel I bet the warranty people wouldn't be too fast in paying out.

I think the engines are designed to run on diesel not diesel mixed with two-stroke oil.

Diesel is oil, so I see no harm in adding a very small quantity of another oil to it. Diesels are, as you say, designed to run on what's available at the pumps, but that doesn't rule out the possibility that an additive is beneficial. A manufacturer is hardly going to say that their engine will run better if you add something to the fuel, are they?

I just think that if it did make that much of a difference companies would be selling it as something else and suggesting to put some in your fuel tank.

I didn't claim that it made "much of a difference," James, just that it ran noticeably quieter. My fuel consumption remains the same at 40.98mpg overall in 14,913 miles - best tankful was 48.96 (08.05.2009), worst was 37.19mpg (26.06.2010). I usually reckon to get 42mpg on mixed driving and that hasn't gone up or down since May, 2009, when I started the experiment. The best tankful was with additive, but it was also long runs in Europe, not my usual mixed urban UK driving.

In theory yes it should give better lubrication to some of your engine internals but I just don't trust something that sounds too good to be true.

I'm not sure how it "sounds too good to be true"? The additive is an added cost to the already outrageous price of diesel, so I'm paying for my (perceived) benefit of quieter and smoother running.

I have no real hard evidence either way so why not give it a go but if something breaks in your engine as a direct result of not using the correct fuel I bet the warranty people wouldn't be too fast in paying out.

As I said, I've been doing it since May, 2009. For the life of me I can't imagine what an oil additive at a 1:240 ratio (0.416%) could cause to break. Seriously, can you?

I've got VCDS coming tomorrow from Ilexa. If anyone knows of a test I can do with that to compare with another similar-mileage, non-additive fuelled 170CR engine, please say so and let us put this to bed once and for all.

Ray

I guess the sensible thing to do if you want to add oil to the fuel is use the same oil as the motor uses. Someone please try it and report back please, I await the results with interest. Actually fully synthetic two stroke oil such as Repsol produce are very low ash, at least my superkart motor seems to like it with no great carbon build up.

Thanks for the thorough reply Ray, I'm really suprised that it makes the CR runs quieter as it already runs pretty sweetly, I wonder what difference it makes to an older PD engine.

I do see your point though. I've ran older engines on other fuels just to see what happened.

I had an old Mercedes 300TD that I used to run on all kinds of stuff just to see what happened to it, never tried 2-stroke oil but it would run on vegetable oil pretty well apart from when it was cold, even ran it on a mixture of diesel and used engine oil and it amazingly did actual run okay, I wouldn't suggest putting used engine oil in the tank of a £25k Superb though!

Hi Ray after speaking to you and reading the post below, i will be using two-stroke oil in my pd engine from now on i will let you know how i get on.

bill.

http://www.audi-sport.net/vb/diesel-forum/48309-2-stroke-oil-diesel.html

PM sent, Bill.

Ray

Is there a specific 2stroke oil spec that should be used?

I noticed on the 2stroke bottles I looked at, most were saying spec 'JASO FB'

Is that correct one to use?

Check out the Freelander II forum (Freel2.com from memory).

In the technical section of their forum there's over 40 pages of discussion on mixing 2stroke low ash with Diesel.

It should keep you all occupied for a couple of hours....

Is there a specific 2stroke oil spec that should be used?

I noticed on the 2stroke bottles I looked at, most were saying spec 'JASO FB'

Is that correct one to use?

NO - you need one that confirms to NMMA TC – W3 specification. Carlube make on which can be found on eBay.

Ray

My apologies, I didn't realise this was the Superb forum,

I assume the engines in these are the more modern common rail diesel engines?

I should have rephrased my question then,

Do you guys know what 2stroke oil is recommended to add to a 1.9 tdi (PD) engine?

So far I've found JASO FB oils only..

A lot of people run Defenders with 2 stroke oil, not sure if I'm brave enough though.

Disclaimer: please ignore advice below, especially if you're about to start a "ït's impossible and breaks your engine in no time" thread.

A dab of supermarket cooking oil mixed with isopropanol achieves much the same effect, quieter injectors and smoother running engine at idle, and costs noticeably less.

Another alternative is to add 20% biodiesel, but only if your car is biodiesel compatible (I do not think CRs are).

About 11 parts rapeseed cooking oil to 1 part pure isopropanol for the "additive" (so about a glass of isopropanol per oil bottle). Make sure isopropanol is 95%+ pure and not a water blend.

Use about 1ltr-2ltr of "additive" per full tank, either mix in or pour on top of (nearly) full tank. Do NOT use in winter as there is increased risk of fuel separation/clogging.

I know of two cars with combined 200k+ mileage using this, admittedly these are non-PD but older IP engines.

No engine nor injector problems, sail through every MOT (10 MOTs in total between the cars) with "fastpass" smoke test results every time.

Do NOT try to infer from this post that using cooking oil in any larger mixture is good for your engine, because it is not. At 1%-3% it vastly improves lubricity without much side effects, at higher mixtures cetane rating drops through the floor and you get lots of smoke on acceleration and serious impact on fuel economy, especially if driven hard.

A lot of people run Defenders with 2 stroke oil, not sure if I'm brave enough though.

 

I run Carlube 2SO in my highly tuned defender ... loves it.  More mpg, smoother, cleaner burn.   Not brave enough to try it in my 2014 1.6 tdi CR Yeti though... :-S  

2 stroke = smoke,

 

Nuff said.

I have tried 2-Stroke oil a few times in my PD, and I can honestly say I have never noticed any difference in noise levels / smoke / performance / MPG, I think its a bit of a placebo effect but that's my view.

 

Personally I just use brand fuel like shell or BP, no supermarket stuff.