Diesel - 10ppm vs 50ppm - Page 2




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  1. #21
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    Default Re: Diesel - 10ppm vs 50ppm

    Decat, and remove DPF, fit a racor filter in line, and fill up with the highest Sulphur diesel you can get your hands on. Enjoy the savings at the pump, and the savings on pump and injector service, and the better all round performance.

    Then if you really want to benefit to the max, make sure you add 2so.

    Psmly parts of this are TIC

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  3. #22

    Default Re: Diesel - 10ppm vs 50ppm

    My local Sasol 10ppm is 18c /l more than than my local Engen 50ppm.

    My overall fuel consumption is about 1L/100km better overall on the 50ppm than the 10ppm.

    So my personal opinion is that in my case the 10ppm isnít worth the price premium and reduced consumption for me.

  4. #23
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    Default Re: Diesel - 10ppm vs 50ppm

    Removing the sulphur increases the cetane value (ignition speed) the faster the ignition the more complete the combustion with more soot. Lower cetane has slower less complete combustion with less soot but more hydrocarbons going through the catalitic convertor that ultimately varnish the CAT and kills it.

  5. #24
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    Default Re: Diesel - 10ppm vs 50ppm

    I've already done the decat, so is there no advantage to going with the 10ppm?

  6. #25
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    Default Re: Diesel - 10ppm vs 50ppm

    I use 10ppm 90% of the time. I still get very good fuel consumption and there is almost no oil discoloration (if that is an indication of the sulpher contamination) between services. I remember a post a while back . A forum member ran one tank of 500ppm in his Isuzu KB and the oil went pitch black.

    As Jack Russel said: the fuel lubrication argument has been discussed to death, one of the reasons 10ppm is more expensive is because of the lubrication additives. I'm more concerned about what high sulpher diesel does to my engine oil (the main lubrication). So i will pay that +/- R12 per tank more

  7. #26
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by Therackermann View Post
    My local Sasol 10ppm is 18c /l more than than my local Engen 50ppm.

    My overall fuel consumption is about 1L/100km better overall on the 50ppm than the 10ppm.

    So my personal opinion is that in my case the 10ppm isnít worth the price premium and reduced consumption for me.
    exactly
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  9. #27
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    Default Re: Diesel - 10ppm vs 50ppm

    Manne skrik wakker...die pyplyn vanaf Durban na die Rand pomp diesel elke dag wat van India af kom of van Kaapstad of van Po77sieshoek in Bots, so word diesel in die Kaapse hawe gestoor wat van Singapore of Chevron refinery in Kaapstad af kom en word orals regdeur die land, Namibia en waar ook al verskeep...so jou Sasol, Engen of wat ook al, het al lankal se naam verloor toe die B&S operateur die poms gestart het...Nou voordat jy jou whatever weer volmaak worry liewer oor hoeveel die kos as wat jy kry..En die wat voel die 10/50/500ppm gee nie genoeg lubrication nie...gooi jou 2so in en geniet jou smokes...die ander sal Diesel product specification google en kyk wat hy kry en wonder, hoekom sal Chevron R4.3m gespandeer op 'n knock masjien, miljoene spandeer op werkers en top of the range Lab in werking hou maar 'n swak produk op die mark sit en dan nogal die swak produk staaf met product certification, hy kon mos maar die kopers ge BS het en geld gespaar het..anyway geniet jou diesel 4x4...hy sal hou vir solank jy na hom kyk..of is ons brandstof net so swak soos ons brandewyn, net die labels is anners
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  10. #28
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by Jack Russell View Post
    Removing the sulphur increases the cetane value (ignition speed) the faster the ignition the more complete the combustion with more soot. Lower cetane has slower less complete combustion with less soot but more hydrocarbons going through the catalitic convertor that ultimately varnish the CAT and kills it.
    Sasol 10ppm actually has a higher cetane rating than other diesel: 70 vs 50-55 for others. So in summary:

    - It's cleaner
    - More energy dense
    - Has a higher rate of combustion
    - Have more/better lubrication additives

    Apart from the small premium in price, what's not to like?

    Source: https://www.sasol.com/innovation/gas...roducts/diesel

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  12. #29
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by Kambro View Post
    Sasol 10ppm actually has a higher cetane rating than other diesel: 70 vs 50-55 for others. So in summary:

    - It's cleaner
    - More energy dense
    - Has a higher rate of combustion
    - Have more/better lubrication additives

    Apart from the small premium in price, what's not to like?

    Source: https://www.sasol.com/innovation/gas...roducts/diesel
    Whats not to like for me is the R2 per litre i get back from Caltex for using 50ppm
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  13. #30
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by Wessel_JHB View Post
    Whats not to like for me is the R2 per litre i get back from Caltex for using 50ppm
    Fair enough, that is a big difference

  14. #31
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by Kambro View Post
    Sasol 10ppm actually has a higher cetane rating than other diesel: 70 vs 50-55 for others. So in summary:

    - It's cleaner
    - More energy dense
    - Has a higher rate of combustion
    - Have more/better lubrication additives

    Apart from the small premium in price, what's not to like?

    Source: https://www.sasol.com/innovation/gas...roducts/diesel
    Funny then, my seat of pants driving experience, and OCD log book and consumption figures don't seems to agree

  15. #32
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by Wessel_JHB View Post
    Whats not to like for me is the R2 per litre i get back from Caltex for using 50ppm
    This is exactly what im saying.

    Does the so called better fuel quality realy out way the finacial benifits?

  16. #33
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by RPiet View Post
    Funny then, my seat of pants driving experience, and OCD log book and consumption figures don't seems to agree
    Yep mine as well. Up to 1L/100 worse consumption on 10ppm.
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  18. #34
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by jelo View Post
    Yep mine as well. Up to 1L/100 worse consumption on 10ppm.
    Yep mine wont even start on 10 ppm ,umm maybe it because its a petrol
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  20. #35
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by An3s View Post
    Not quite.

    10ppm has to be 10ppm or better. You are not allowed to sell (say) 18ppm as 10ppm.
    50ppm has to be no higher than 50, but could be quite a bit lower.
    Each load that is dispatched has to be tested and certified - it is a regulatory requirement.
    True perhaps, but a friend who is in the oil and gas industry has had some shocking tales as to the fuel quality we get here (delivered to the pump).

  21. #36
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by jelo View Post
    I've done several back to back tests with Sasol 10ppm and various brands of 50ppm and my fuel consumption was markedly better with most brands of 50ppm.

    Also, a timed uphill run showed that my bakkie was consistently slower between two marked points with 10ppm.

    Not empirical, but nevertheless.
    I've had similar experiences. I do not know all the technical stuff, but i had lower power on both my Puma and my BMW 320d when using 10ppm.
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  22. #37
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by Fluffy View Post
    I don't follow that logic.

    If something is better than something else, and you can get it and use it and there is no crippling financial impact, then use it - doesn't matter if the manufacturer mandates or requires it.
    ...
    I don't agree with that...
    I have a 2006 Ssangyong 2.9TD - and the engine is an even older Merc engine - probably developed in the '80's. I haven't found anything that says i should or shouldn't use 50ppm or 10ppm, but it feels like its running on gravel when i fill with 50ppm - never tried 10 and don't plan to try - I hunt out 500ppm... it runs smoother and i get better fuel consumption.

    Quote Originally Posted by Kambro View Post
    Sasol 10ppm actually has a higher cetane rating than other diesel: 70 vs 50-55 for others. So in summary:

    - It's cleaner
    - More energy dense
    - Has a higher rate of combustion
    - Have more/better lubrication additives

    Apart from the small premium in price, what's not to like?

    Source: https://www.sasol.com/innovation/gas...roducts/diesel
    So then would it burn hotter for the same air-fuel ratio? (i doubt very much that my engine could monitor the fuel quality going in and make adjustments?). So why would i need a higher energy fuel when its just going to make me run hotter (I'm no mechanic or tech expert so me reasoning could be wrong).

  23. #38
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    Default Re: Diesel - 10ppm vs 50ppm

    Quote Originally Posted by Kambro View Post
    Correction: it is lower in energy density, less BTU'S. That is why the older engines get bad consumption figures. And be carefull of believing the source you quoted... they tend to sugar coat lies with one or two facts.

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