Does 2T have a placebo effect?

[threedogs]

I think its best to use T2 with a fresh tank of diesel just before a long trip.
Using all your fuel in one hit, I do this with "injector cleaner", Old timers
have been using different things over the years eg ;;like a cup of metho
in the petrol tank, ATF sounds fine imo

[GeeYou8]

Two stroke oil is ashless, so it does not form solid particulate matter when burnt.
As an example Dex2 is vegetable oil (jojoba) based which may or may not leave gum when burnt.
Graham

[VK2FMIA]

Two stroke oil is ashless, so it does not form solid particulate matter when burnt.

Have been following this discussion for a while & have done a bit of research. Found an interesting article from a fuel testing company about adding 2 stroke oil to diesel.

From the article

"The results of the study support a view that the practice of dosing diesel with 2-stroke oil is surprisingly ineffective in terms of lubricity and cetane improvements. Engine performance, fuel consumption and emissions were also unchanged; however the use of 2-stroke oil in diesel is potentially harmful to modern diesel injection equipment. Trace amounts of zinc, an element which is found in most 2-stroke oils, are well known to cause injector nozzle fouling and the study measured high levels of injector fouling when the test engine was running on diesel dosed with 2-stroke oil."

The full articale can be found here http://www.fuelexpert.co.za/2-stroke...ical-study.php

Wonder how many "Grenade" issues might have been caused by engines using 2 stroke running lean & burning holes in pistons due to injector fouling?

[4bye4]

Have been following this discussion for a while & have done a bit of research. Found an interesting article from a fuel testing company about adding 2 stroke oil to diesel.

From the article

"The results of the study support a view that the practice of dosing diesel with 2-stroke oil is surprisingly ineffective in terms of lubricity and cetane improvements. Engine performance, fuel consumption and emissions were also unchanged; however the use of 2-stroke oil in diesel is potentially harmful to modern diesel injection equipment. Trace amounts of zinc, an element which is found in most 2-stroke oils, are well known to cause injector nozzle fouling and the study measured high levels of injector fouling when the test engine was running on diesel dosed with 2-stroke oil."


The full articale can be found here http://www.fuelexpert.co.za/2-stroke...ical-study.php

That would probably depend on the oil used in the test. I have seen this or similar articals before. The thing is though of all the people using 2 stroke in the tank, we dont't hear many complaints of fouled injectors.

Wonder how many "Grenade" issues might have been caused by engines using 2 stroke running lean & burning holes in pistons due to injector fouling?

Not many I suspect - there are many reports of grenading from those who have never added anything at all to the fuel. I suspect there is no relationship there.

As to the original question, I added 2 stroke for a three month period over different driving conditions, highway, off road and city, and the only thing I noticed was I thought less fuel pump rattle. I recorded the fuel useage without 2stroke for three months, with for three months and am no longer bothering to add it as there was no difference in fuel usage or performance over the period. I think in my own case it was a placebo effect, I expected it to sound better so it did and I think that we sometimes drive a bit differently when we are testing products and maybe change the outcome, but the numbers on the record over three months (just kept an Excel sheet) showed no improvement in fuel usage whatever.

[threedogs]

I'll put some in today and see if it makes my engine quieter.
Its reasonably quiet as it is ,, time will tell eh. lol

[threedogs]

Ok tipped in half a bottle cause I only had half a tank, it took a few bends to shake it around .
But I have to say on my DI motor with 225k it made the Idle quieter. Very noticeable IMO.
No idea if Ill get better fuel figures but less noise at idle thats for sure.

[Cuppa]

Have been following this discussion for a while & have done a bit of research. Found an interesting article from a fuel testing company about adding 2 stroke oil to diesel.

From the article

"The results of the study support a view that the practice of dosing diesel with 2-stroke oil is surprisingly ineffective in terms of lubricity and cetane improvements. Engine performance, fuel consumption and emissions were also unchanged; however the use of 2-stroke oil in diesel is potentially harmful to modern diesel injection equipment. Trace amounts of zinc, an element which is found in most 2-stroke oils, are well known to cause injector nozzle fouling and the study measured high levels of injector fouling when the test engine was running on diesel dosed with 2-stroke oil."

The full articale can be found here http://www.fuelexpert.co.za/2-stroke...ical-study.php

Wonder how many "Grenade" issues might have been caused by engines using 2 stroke running lean & burning holes in pistons due to injector fouling?

I recall reading an article somewhere (wish I could remember where) responding to that South African research. To be honest I don't recall what it said, only that after reading it I was quite happy to continue using 2T in my TD42. Owners of later technology motors are probably wise to be more cautious. After using the 2T for over 10,000kms I put some injector cleaner through the system. The result was no difference which suggested either the injectors were in good clean condition or that injector cleaner doesn't work (another issue which seems to have believers & non believers & on which I have no position having only ever used it on that one occasion). As I have no performance deterioration & the car runs as well as it ever has my view was that the 2T was doing no harm. No idea whether it actually lives up to all the claims, but I am confident, in my case at least, it makes the running engine/fuel pump quieter & I believe a little smoother. (A little less truck-like, & a little more car-like). Having been on trip in Appollofish's later 3 litre ST wagon I would doubt if owners of those vehicles would notice similar results that I've observed in my DX ute. It may be that 3 litre models are quieter & smoother than TD42's but the far superior noise insulation in the ST wagon makes direct comparisons pretty much impossible. At times I've wanted to believe 2T has improved my mileage but now put that down to other factors & wishful thinking. One day I really must try a couple of tank fills without 2T but will wait until I've used the supply of 2T I bought, & at my average mileage that will take some time yet.

[Touses]

@Cuppa whack up link to the Bailey diesel research. I don't possess the skills to do it. It's in your first post on the other 2t thread. May clarify the issue of common rail and di engines?

[Cuppa]

@Cuppa whack up link to the Bailey diesel research. I don't possess the skills to do it. It's in your first post on the other 2t thread. May clarify the issue of common rail and di engines?

Your wish is my command.

It's only a short article. I'd probably call it 'informed opinion' rather than research.

http://www.baileysdiesel.com/on-high...-rail-engines/

[Hodge]

Been running 2T in my 4.2 for a while now on and off. I can tell you now, the motor runs so much quieter and smoother with the 2T mixed in. This is 100%, no placebo effect here...
However.
Cannot comment on economy or power as I have not noticed nor been on the lookout for any improvement in this case.
After a tank or 2, without 2T the 4.2 returns to it's original heavy diesel "ticka tacka ticka tacka" sound.