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putting 2-stroke oil in your diesel

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hi

today i came across this thread http://www.freel2.com/forum/topic878.html?highlight=2+stroke+oil after having a persuse of the defender 2 forum as my friend is always going on about it

can anyone shead some light on if its wise to add 2 stoke oil to my fuel and will it make any positive impact to my engine or kill it?

maybe ralph? you know everything!

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Supposedly, the ULSD now dished out by the pumps doesn't lubricate your injection pump as well. Some people have taken to adding 2 stroke oil to their diesel to regain the lubrication.

I'm of the opinion that it isn't an issue. Or at least those that have had supposed problems have had an underlying one that might have been exacerbated by the reduced lubriscosity.

It won't kill your engine. I don't think it will do any harm. But I'm also not convinced by the necessity or supposed benefits.

I also notice this about the post you've linked to: It contains no references to this 'research' or 'proven facts'. It talks about 'greasing' and 'emulsions' - both of which are incorrect terms. It also talks about increased mileage.

Smells fishy.

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I have 4 litres of 2-stroke oil ( left over from microlighting )... so I stick 250ml in each full tank load...have to say, engine seems quieter and tad smoother...so I'll be sticking with it :i-m_so_happy:

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I use 2 stroke at 1:200 at each fill up, ie 50 litres = 250ml.

It was first recommended to me by someone who works on engines at JLR.

You can convince yourself it has improved the thing but the first time madam got in after I used it, she said 'what have you done to the engine? It's so much quieter!'

She is not a woman known for her mechanical sensitivity.

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It might do 'something', but I doubt the major fuel manufacturers would intentionally make a fuel that didn't work in an engine and damaged it.

Of course which engine a modern diesel fuel is optimised for may be a different matter, and whether the same fuel blend suits an old injector pump and a modern common rail system is something I'm not qualified to comment on, but it wouldn't be hard to imagine the ideal mix isn't the same, in the same way as a modern unleaded isn't ideal for a 1950s classic Jag.

However, climbing on my soapbox, there are very different types of "2 stroke oil" - I have an E-TEC direct injection 2 stroke outboard motor, and the oil that this uses is completely different to the oil that I put in my strimmer. My limited understanding is that the difference between marine (TCW3 and other more specialised marine oils like the XD100 my engine uses) and the stuff for air cooled strimmer engines is mostly to do with the way the engine is cooled - the water cooled outboard running much cooler than the air cooled strimmer at 15000rpm or whatever they run at. Water-cooled non marine engines like bikes may use something different again, not sure.

So which "2 stroke oil" do you choose for adding to your Defender...... :)

Of course the most compelling argument is if you have anything under warranty, and the point made further down that page about the dealers doing fuel samples for any engine that has gone bang. If it's a fuelling, overheating or other possibly fuel related issue, kiss goodbye to any warranty. Whether or not that is justified is a fair argument, but the book says don't use additives, so if you do...

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On the transit forum quite a few have tried (me included) and are happy with it (me included).

I tend to run a few tanks of diesel at 1:200 before changing the fuel filter. Effectively running with 2-stroke oil in the summer and to maintainance in Oktober.

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The 2 stroke to add is the good old fashioned mineral oil and not the new high tech synthetic stuff. The old stuff actually mixes with diesel but the new stuff does not.

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Long discussions here http://www.landyzone.co.uk/lz/f9/2-stroke-oil-diesel-164225.html

Interesting facts (anecdotal) but enough for me to give it a go. Have done so for a year and I believe there is an improvement in general running but no real gain in MPG. Mine is a 22year old 2.5 na. Certainly hasn’t harmed and I think improved. One caution though is not to fall fowl of custom dipping as it will look like dyed agricultural diesel, mine is Tesco 2 stroke and is red, Irish agri-diesel is green. Hopefully with an explanation that will suffice without having your vehicle impounded and lengthy testing to prove your innocence!! BUT I think the agri-diesel in the North is red so that would be a problem……

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I've heard of people using a bit of old ATF autobox-fluid as a Diesel-additive to clean the injectors too [ATF is rather high in detergents].

My worry would be as mentioned above - it's red, which could cause some furrowed brows if your tank got dipped by HMC&E.

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Not sure I'd be too keen on using old ATF (assuming by old you mean used) it'd be full of metal particles, would it block the filter or worse?. If however ATF is ok to use and you are worried about the colour you could try MTF .... it's not red.

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"The 2 stroke to add is the good old fashioned mineral oil and not the new high tech synthetic stuff. The old stuff actually mixes with diesel but the new stuff does not."

I don't know about mixing (I imagine it would) but mineral is the stuff I have been told is best. Apparently adds lubrication taken out by the removal of sulphur additive (for 'eco' reasons not because it's best).

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Mineral oil would make sense as being more compatible, but that's the point ... you're straying into the unknown ;) another point of view might say "Add in a load of [synthetic] XD100, it's expensive so it must be better"

Boom? :)

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Mineral oil would make sense as being more compatible, but that's the point ... you're straying into the unknown ;) another point of view might say "Add in a load of [synthetic] XD100, it's expensive so it must be better"

Boom? :)

But mineral oil is soluble in diesel but synthetic is not so at any given time you can have all diesel or in some circumstances all synthetic oil going to the engine or globs of synthetic going to the engine.

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I tried 2 stroke for a while and didn't really notice much, if any difference in running. I've since tried Millers additive which does make a noticeable difference, and regular diesel with the additive is very much like using BP Ultimate diesel, if not better. When I was using the 2so I had some premixed in a container & the quantity of 2 stroke to diesel ratio won't turn your diesel red.

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I tried 2 stroke for a while and didn't really notice much, if any difference in running. I've since tried Millers additive which does make a noticeable difference, and regular diesel with the additive is very much like using BP Ultimate diesel, if not better. When I was using the 2so I had some premixed in a container & the quantity of 2 stroke to diesel ratio won't turn your diesel red.

I recently started using BP Ultimate and have to say its transformed the engine astonishingly. It's quieter, more economical and the power increase is noticeable, pulling cleanly and smoke-free to 70mph with ease. Uphills are noticeably 'easier' too and its less smoky at all times. I think I'd rather pay the premium for Ultimate than stick some fluid of unknown effect into the lump.

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Yeah, BP Ultimate is good. It is pricey though hence using Millers, with an end result that's just as good (if not better) than Ultimate. Regular BP & a shot of Millers works out a bit cheaper too.

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to be honest i have never had good results with any bp fuel in my 300tdi, i find bp fuel lowers my mpg where shell v-power and sainsburys give me the best mpg, (it may be a lil sad but i studyed my fuel usage over almost a year to figure out where i was best to buy fuel from, unfortunately dont have the results anymore) :(

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BP Ultimate and Shell V power have more detergent than the regular fuel and thats all. I can't really seen that it improves perfomance much, if at all, other than the cleansing effect.

I have tried a lot of additives over the years, and TBH (and I am a just as guilty as everyone else) I fear any improvement is mostly imagined, rather than actual

Dont forget that ANY percieved improvement in economy is probably more a result of you actually driving more economically because you are trying to see if the additive makes it more economical..................if you see what I mean ?

Also, any savings are offset by the cost of the additive..............................

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http://fordtransit.org/forum/viewtopic.php?f=4&t=124290&hilit=adding+2+stroke+to+diesel

the transit guys do drive with 2-stroke as well. Appearanty cheap ass (mineral) red color oil is preferred. (might be in the topic I just linked to or in one of the many others).

I've driven my 2.5di transit with 200:1 mixture and it was smoother and quiter. I tend to do it on the last tanks before i'm going to service and change filters anyway (3 tank a year, in summer likely, as I service in October).

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I have tried ordinary diesel with FB and FC 2so and BP Ultimate with both. I have just run the last 5 tanks without any 2so as a test, filled up 2 days ago with 1:200 FC 2so, that's 100 miles worth and it is quieter and smoother.

I use Castrol Aceto 2T. Tried various others, research loads and know of some people who seem very experienced and knowledgeable on another forum who have covered 200k+ miles in a Puma and swear by 2T.

Each to their own though

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