2 stroke oil in common rail diesels - new article (brief)

[Cuppa]

I'm happy using it in my 4.2, but had been of the impression it may not be such a good idea for later common rail motors.

http://www.baileysdiesel.com/on-highway/truth-adding-two-stroke-oil-diesel-modern-common-rail-engines/

[Hodge]

I read this yesterday. Like Cuppa I didn't think it would be OK for the common rail motors.

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[megatexture]

I've been using it in my 09 for well over a year now and I notice when I run out or the missus don't put it in when she fils up. Been Woking great so far smoother acceleration and quieter.

[BigRAWesty]

Well I guess I'll be getting some..

[GeeYou8]

When running on Jet A1 (kero), you have to use 2 stroke oil, but at around 100:1
When they drain the tanks on aircraft, the fuel can't be put back in an aircraft, & they have to pay to dispose of it. It got sold to the engineers for home heating etc.
Graham

[megatexture]

I use the 500:1 ratio never seen any mention of 300:1 till now but I don't think I'll be going down that path

[Hodge]

Cuppa and megatexture. What oil exactly do you use ?
I know it has to be mineral low ash. Wouldn't mind trying it on the 4.2

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[Kimbo63]

Makes sense to use in any direct injection engine as I think injector failure is the main cause of piston melt down well it has been on every Komatsu and Cummings engine I have attended with a hole in the piston can sometimes be hard to prove as the failure sometimes destroys the evidence
Cheers Kimbo

[jff45]

Cuppa and megatexture. What oil exactly do you use ?
I know it has to be mineral low ash. Wouldn't mind trying it on the 4.2

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I use Gulf Western 2 stroke for air cooled engines. It's about the cheapest the average non-trade punter can get.
I can't give any opinion on it because I've always used it from day one with this engine.
I use it at 200:1 as recommended..

[the evil twin]

Quote for the later CRD brigade... esp if you run Vortex or Ultimate

Vehicles equipped with Bosch, Delphi, or even Seaman’s fuel systems generally don’t need it. Therefore, your unlikely to see a significant change in engine performance or noise with the use of 2-stroke in diesel.

[Cuppa]

Cuppa and megatexture. What oil exactly do you use ?
I know it has to be mineral low ash. Wouldn't mind trying it on the 4.2



I use Castrol Activ 2T, bought 2 x 4 litres when it was on special at Repco before Christmas 2014. it was $31.99 for 4 litres then. Not precious about the brand though, if there is a cheaper mineral 2t for air cooled engines which costs less when I next need to buy some, I'll get that. Have always run it at 200:1 but might try 300:1 to see if it makes any difference.

[Hodge]

Thanks Cuppa. So I will go and grab a bottle and give it a shot.
I already use the flash lube diesel conditioner, so might skip that for a bit to see results of 2T.

http://www.nissanpatrol.com.au/forums/attachment.php?attachmentid=66131&stc=1

[Softy]

Yep i use the Activ 2T myself... Gulf Western stuff is cheaper but i like my Castrol Products!

[megatexture]

Any 2t mineral with jaso fc spec will do

[Touses]

G'day all! Very interested in this. Due for a tank today will give it a crack at 300:1.
Report in a few days.

[megatexture]

It Should only take a few hundred meters lol

[Hodge]

Alrighty, just got some lets see how this goes. I'll give 200:1 a shot so thats 450ml for main tank.

http://www.nissanpatrol.com.au/forums/attachment.php?attachmentid=66197&stc=1

[Touses]

It Should only take a few hundred meters lol

Well it didn't take too long!
13 k run home day 1, meh!
In to work yesterday, meh!
Going home yesterday and the engine definitely "sounded" quieter.
I assume that's the injector knock lessening?
Startup this morning was a revelation. Nil exhaust smoke and a smoother cold idle!
Into work, can't say that it was more responsive or "drove better" but tacho did seem to be a needle width lower at usual run speeds.
Now I'm keen to see if the economy improves off this tank.
So the upshot is. Definitely some improvement.

Will post more when I know more!

Cheers all!

[Hodge]

OK a day and about 50km after filling up the main tank 90l and adding around 400 ml of 2t.
She is definitely a quieter kitten now. Definitely noticed this mornings first few Cold minutes she lost that top end of the typical " taka taka taka taka" diesel sound. Sounded smoother if you will...
Biggest difference I noticed was through Mc drive thru . Since it's kind of like a sound tunnel I got to hear all the different sounds bouncing around and she's 100% quieter than usual !

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[Makka]

is this also recomended for na motors ???

[Cuppa]

is this also recomended for na motors ???

It won’t do any harm. Give it a try & I suspect you’ll like it.

[Makka]

car is not on the road yet will see how we go when it is ready for rego

[BigRAWesty]

is this also recomended for na motors ???
Absolutely.. made a huge difference with my na td42..

The trial is happening with the zd30..
450k trip ahead.. let's see what happens..

[BigRAWesty]

Well. It's quieter that's for sure..

Not sure it'll add any fuel efficiency but it's only done half a tank..

[Touses]

Well fellas the jury has returned a verdict here.

After buggering my first tank figures, bogged for two hours see happy thread, the second tank proved successful.

With 50/50 miss daisy and highway work the end result was closer to GOOD highway figures than I might reasonably have expected.

Very much looking forward to a full tank as highway driving alone.

Big thumbs up from me Cuppa!

[BigRAWesty]

I personally didn't notice any efficiency increase..
I actually lost 1L/100 but I have added roof bars and awning.. and from my previous figures that usually looses that 1L..

So for me initial tests are coming in not a negative but not the be all end all..

I have noticed a lot less ticking and rattle.. so in my eyes that's a bonus..

[nipagu7]

i have been keeping an eye on this topic for a while . the 2 stroke oil rarely seems to give better fuel economy , but in almost every case tends to quiet down the injector noise , which would indicate better lubrication of the injectors , which would in turn suggest a longer service life . although at this stage , how much longer would only be a guess . no one seems to have racked up big k's on a CRD whils't using 2 stroke the whole time . time allowing i'll try to work out a rough cost/benifit . what is a new / reco set of injectors worth , and then labour to fit . biggqwesty what ratio are you running , it seems mix's are running any where from 200 / 1 to 500 / 1 . it would be good to do tests too determine at what ratio would be the leanest that could be used . but i can't do that as it takes me about 8 weeks to use 1 tank of fuel normally .

[Hodge]

I'm half way through my second tank with 2t in it. I have been putting in abut 400 ml per 90 liter tank. Right now the engine is super quiet . Haven't noticed any economy improvement or performance difference.

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[nipagu7]

that's about 225-1 hodge . maybe the 4.2's need a different mix as they run lower pressures

[Softy]

485ml seems to be the magic number thrown around for a full tank in a GU... I run it few every few tanks, I get no better/worse economy but it sure does make the motor quieter.. And the piece of mind that gives me is enough reason to keep using it.

[BigRAWesty]

Ummmmmm..
I added 100mls to 165L and noticed a difference...

[Cuppa]

I run it few every few tanks

So do you notice a difference when running the tanks without it?

I've used it consistently in every tankful since starting to use it, but would be interested to know if the quietning/smoothing effects continus 'between doses'?

[nipagu7]

485mls in (assuming ) a 95lt tank is 195.8 to 1 . 100mls in 165lts is 1650 to 1 . that's a huge difference .

[Softy]

I can tell an audible difference on the tanks without 2 stroke in them as just running straight diesel slowly flushes the 2 stroke out of the system the motor gets louder.

[shai.dawson]

mmmm may have to try this in my crd

[BigRAWesty]

485mls in (assuming ) a 95lt tank is 195.8 to 1 . 100mls in 165lts is 1650 to 1 . that's a huge difference .
I know..
I don't think running half a liter is worth it imo.
So just some lite maths..
An average of 7k/L gives us $32,000 (roughly at 112c/L) for 150,000k's traveled.
Now in that 150,000 km we fill 95L 225 ish times.
Now even at $5 of oil each fill that's $1100 of oil.
That's a fair wack off the set of new injectors, and one would hope they see out those sorta k's..

[Hodge]

3rd Tank tonight with 2T. I'm sold. If I intend to use it, I'll have to find a economical method to buy 2T. Bulk maybe.

[BigRAWesty]

3rd Tank tonight with 2T. I'm sold. If I intend to use it, I'll have to find a economical method to buy 2T. Bulk maybe.
Absolutely..
It works a treat. But dam expensive lol

[Touses]

Second tank of test. 500k of miss daisy. Returned better than general results!

So what's happening here? Does the two stroke have some sort of cleaning property?

Any way I look at it I'm sold. Just the reduction in engine noise is a winner.

Have reduced the ratio to 400-1 for this tank. Will monitor it at that and report again!

[Hodge]

Mine running so smooth now. Almost not a 4.2 like sound lol.

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[Robo]

I know..
I don't think running half a liter is worth it imo.
So just some lite maths..
An average of 7k/L gives us $32,000 (roughly at 112c/L) for 150,000k's traveled.
Now in that 150,000 km we fill 95L 225 ish times.
Now even at $5 of oil each fill that's $1100 of oil.
That's a fair wack off the set of new injectors, and one would hope they see out those sorta k's..

I paid $600 exchange.
Set of 6 suit td42t.
almost half the cost and lots less mucking around each fuelup.

[BigRAWesty]

I paid $600 exchange.
Set of 6 suit td42t.
almost half the cost and lots less mucking around each fuelup.


About $1700 a set of Bosch injectors for the zd30..

[Robo]

About $1700 a set of Bosch injectors for the zd30..

$1700 brand new?

[BigRAWesty]

$1700 brand new?
Yea that's ebay prices..
Genuine is usually more

[Softy]

Last few tanks without 2T i have been averaging 12-12.5 just filled up before after running the last tank with 2t and 13.52... Same type of driving around town for a take couple of tanks... So it seems i lost 1l/100 running the 2t, but i'll cop that for piece of mind. I wont run it again for another 2-3 tanks then give it dose once the ip starts getting louder again.

[nipagu7]

what ratio where you running it at softy. i can't remember anyone seeing such a big difference in fuel economy especially a negative effect .

[Softy]

485ml/90L

Everytime i have used 2T i have got worse economy for that tank.. No idea why.

[nipagu7]

thats about 185 to 1 softy . thats the richest mix ivé seen . some say 500 to 1 works well , with one report of about 1600 to 1 working . maybe your mixture is to rich and it is causing poor combustion of the fuel mixture .

[Touses]

Ok last tank at 400-1. No noticeable difference in engine noise at all and figures returned same same as prior tanks.

I reckon I'm getting About 1/2 k per litre better.

So at $8.00 per litre for two stroke at 400-1 that's 125ml to treat 50l so $1.00 for same.

Looking a lot like I'm saving a quid here!

66959

Been picking this up from local spares supplier