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Home > Technical > 2SO - 2 Stroke oil and Diesel |
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DiscoGeorge Member Since: 20 Nov 2010 Location: Pretoria, South Africa Posts: 193 |
Hi Alex I have seen that article before. It is very interesting and factual. Regarding your last question, the answer to that one most probably lies in impurities finding their way into the diesel from the refinery to when it is filled into the customers diesel tank. The fact that the removal of the sulphur compounds is not the main reason for the reduced lubricity is well known to us here in SA. We are battling on a daily basis with diesel fuel of marginal lubricity at best (50ppm). The addition of 2sO has been found to be a very effective way to combat this problem, with a big bonus add on - the removal of carbon deposits by the additives of the JASO-FC compliant 2sO. Those TDV6 andf TDV8 engines run here in SA with 2sO added to the diesel don't suffer from the HPFP and injector whoes, that are so common place here in SA across the whole spectrum of manufacturers of CRD diesels. With kind regards DiscoGeorge 1998 Disco1 ES 300Tdi with twin TrueTracs 2005 Disco3 TDV6 S And some more serious stuff |
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28th Oct 2012 1:21 pm |
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DiscoGeorge Member Since: 20 Nov 2010 Location: Pretoria, South Africa Posts: 193 |
Hi Alex yes this would be an interesting excercise with a VERY predictable outcome. I just have to look at an HPFP that failed at 80'000km (run on normal 50ppm diesel), and then compare it with an identical unit at 450'000km but which has been run with the 2sO addition. Here I just have to add that we are battling here in SA with diesel of dubious quality depending on which region one fills up here in SA. In the big cities it is normally not too bad, but out in the sticks one runs the gauntlet every time one fills up the diesel tank. Here the 2sO addition prevents unnecessary repairs and unscheduled downtime. I have had it numerous times after filling up in the sticks, that I was sitting shortly thereafter with a blocked diesel filter. With kind regards DiscoGeorge 1998 Disco1 ES 300Tdi with twin TrueTracs 2005 Disco3 TDV6 S And some more serious stuff |
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28th Oct 2012 5:21 pm |
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Past master Member Since: 30 Jun 2010 Location: Isle of Ely Posts: 2710 |
George your findings confirm what I (eventually!) picked up from the OP. The only evidence Yamaha-fan was able to provide seems to show that one big manufacturer recommends 2SO for special applications - which I take to mean when running in areas where the diesel may be dodgy. I think we can take it as read from your posts that the diesel in SA is pretty c**p, and that the 2SO addition provides a useful safeguard against pump and injector wear.
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28th Oct 2012 8:01 pm |
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DiscoGeorge Member Since: 20 Nov 2010 Location: Pretoria, South Africa Posts: 193 |
Hi Past Master
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28th Oct 2012 8:31 pm |
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Past master Member Since: 30 Jun 2010 Location: Isle of Ely Posts: 2710 |
The TDi motors of course are "ancient" technology where the FL2 is concerned. They are more tolerant in many ways - lots of people run them on neat cooking oil because it's cheaper than diesel, with no obvious ill-effects - but that may also mean that they react more obviously to additives. I wonder whether the cold start improvements you mention are also down to the improved cetane rating - you might find the same effect with the "premium" fuels on sale over here. |
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28th Oct 2012 9:25 pm |
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DiscoGeorge Member Since: 20 Nov 2010 Location: Pretoria, South Africa Posts: 193 |
Hi past master
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29th Oct 2012 4:00 am |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
Sorry for saying but in various previous occasions you said:
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29th Oct 2012 7:46 am |
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DiscoGeorge Member Since: 20 Nov 2010 Location: Pretoria, South Africa Posts: 193 |
Hi Alex
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29th Oct 2012 1:09 pm |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
So, for a long time, the info about 2sO was only hearsay... Just experience and feeling, nothing scientific based and measured.
You forgot the fact that the igniter on the Diesel Webasto is a glow plug that can't get clogged-up and neither its injector, because before powering down the burner's firmware perform a very thorough (about 3 minute) self clean-up in preparation for the next start cycle. Therefore the inability to start must be looked elsewhere... I know because I worked with Webasto preheatears, especially with the Thermotop V, the one on Freelander 2. And never had any problems with my Thermotop V, not even when temperatures were as low as -30 Celsius. Maybe I was just lucky and/or the fuel was good. |
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29th Oct 2012 2:49 pm |
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DiscoGeorge Member Since: 20 Nov 2010 Location: Pretoria, South Africa Posts: 193 |
Hi Alex
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29th Oct 2012 4:15 pm |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
Don't worry, as I've said before in this thread, I myself am using 2sO from day 1 in my 2.2 HDI. But there are a lot of people who doesn't know what to believe and I will keep to play the "devil's advocate" until some realistic proof will come out - again, I am interested only in the tribological point of view. And to be honest, I am waiting this proof for me too, because I am not 100% sure of it, the fact I am using it being just a hunch and a feeling that can't go wrong and just for the sake of a clean engine and it's enough... |
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29th Oct 2012 5:13 pm |
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DiscoGeorge Member Since: 20 Nov 2010 Location: Pretoria, South Africa Posts: 193 |
Hi Alex I for myself don't need any further proof, after what I have seen from dissected diesel pumps, that are being sent in for refurbishing after 500'000km and they just get new seals and are then re-calibrated on the flow bench. It is actually amazing by how much this "muti" prevents wear on those pumps. The same goes for the high pressure shaft seals on the CRD HPFP's. So for me it is down to 2 choices: - Use 2sO OR - Forego the holiday money to refurbish CRD components after some 80'000 - 120'000km. Needless to say for me it is option 1 With kind regards DiscoGeorge 1998 Disco1 ES 300Tdi with twin TrueTracs 2005 Disco3 TDV6 S And some more serious stuff |
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29th Oct 2012 5:53 pm |
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wizking Member Since: 18 Mar 2010 Location: Around Posts: 1848 |
For those who do like to use it, I have just bought some castrol actevo 2T (FC rated) from a tesco garage for the remarkable price of £1.44 a litre. |
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29th Oct 2012 5:57 pm |
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DiscoGeorge Member Since: 20 Nov 2010 Location: Pretoria, South Africa Posts: 193 |
Hi wizking that is what the TDV6 owners on disco3 uk forum are using. Jaso (Japanese Automotive Standards Organisation) -FC rating means it burns ash free and is suitable for vehicles with DPF With kind regards DiscoGeorge 1998 Disco1 ES 300Tdi with twin TrueTracs 2005 Disco3 TDV6 S And some more serious stuff |
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29th Oct 2012 6:18 pm |
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