Mercedes, Toyota, Isuzu, VW – B10 biodiesel no go


Following BMW Malaysia announcing it found “technical challenges” running its diesel engines on B10 biodiesel (10% palm-based biodiesel/90% petroleum diesel blend, will reportedly be implemented nationwide by October), and that its engines can take up to B7, Mercedes-Benz Malaysia, UMW Toyota and Volkswagen Malaysia have issued responses that echo the same sentiments.

UPDATE: Isuzu has released a statement regarding the unsuitability of B10 for its engines.

Mercedes-Benz Malaysia says its diesel-powered passenger cars, vans and trucks can use up to B7 biodiesel (7% palm-based biodiesel/93% petroleum diesel blend), while Fuso trucks in Malaysia can only take a maximum of B5 biodiesel (5% palm-based biodiesel/95% petroleum diesel blend). It goes on to say that “the introduction of B10 biodiesel requires further consideration.”

Responding to our questions, UMW Toyota said its current diesel engines are not rated for B10 use; they can only take up to B7. As such, they do not encourage B10 use in their models. It’s the same story with Volkswagen Malaysia, who told us that running B10 on its diesel engines will produce adverse effects as well as void the warranty.


Also not in support of B10 is Isuzu Malaysia, which says that one of the primary concerns about biodiesels of grades B7 and above has been, among others, the high presence of water in the blends of palm methyl ester. Biodiesel is hydroscopic in nature and tends to absorb water from the atmosphere, which can cause deposit formation, microbial growth and degradation of fuel quality, ultimately affecting the vehicle’s engine operation and durability.

In view of this, Isuzu says that the current limit of water content in biodiesel is acceptable up to grade B7, and that further conclusive tests will need to be conducted and proven with consistent results to allow for levels B7 onwards.

So far, only BMW Malaysia has gone to town with the issue, technically elaborating on the problems it found during testing, including oil thinning leading to sludge, reduced lubricity, injector deposit formation, injector invariance, reduced idling cycle stability and higher levels of water in the fuel leading to component corrosion.

BMW Malaysia even brought our attention to a 2012 joint-statement by diesel injector makers Delphi, Denso, Bosch, Continental and Stanadyne, which cited reduced fuel stability (leading to “plugged filters, sediments and sticking moving parts”), impurities in the fuel and compatibility issues with older vehicles (most likely affecting filters, hoses and seals) with biofuels.

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Jonathan James Tan

While most dream of the future, Jonathan Tan dreams of the past, although he's never been there. Fantasises much too often about cruising down Treacher Road (Jalan Sultan Ismail) in a Triumph Stag that actually works, and hopes this stint here will snap him back to present reality.



  • Areyousure on Jun 18, 2015 at 11:40 am

    Diesel still not favorable in Malaysia.
    For example, brand new BMW 320d 260K.
    2 years old, the price left only 160K

    Like or Dislike: Thumb up 4 Thumb down 25
    • Seriously on Jun 18, 2015 at 1:12 pm

      All companies already voice out, how come only Proton don’t make a sound about biodiesel?

      Like or Dislike: Thumb up 4 Thumb down 31
      • Obviously (Member) on Jun 18, 2015 at 1:47 pm

        They don’t need to. They have no diesel engine.

        Well-loved. Like or Dislike: Thumb up 58 Thumb down 0
      • Add-A-Comment on Jun 19, 2015 at 8:45 am

        Damn funny when u see stupid ppl comment without even using their brain…ohh…do they have one?

        Like or Dislike: Thumb up 12 Thumb down 5
      • albag on Jun 19, 2015 at 9:59 am

        the amount of stupidity is high in you… Seriously Stupid

        Like or Dislike: Thumb up 6 Thumb down 1
      • Jilbaber (Member) on Jun 22, 2015 at 8:13 am

        Are you just blindly bashing Proton for no reason at all ?

        Like or Dislike: Thumb up 3 Thumb down 0
    • lolec on Jun 18, 2015 at 1:28 pm

      So the so called reliable brand toyota cannot use this fuel? No wonder it’s called dinosaur aged engine, not advanced at all

      Like or Dislike: Thumb up 4 Thumb down 44
      • yawns on Jun 18, 2015 at 1:58 pm

        Does that also mean Mercedes & VW Malaysia also have dinosaur aged engines? Not advanced too?

        Use your brain before speaking, duh!

        Like or Dislike: Thumb up 32 Thumb down 5
      • pfftt on Jun 18, 2015 at 4:19 pm

        what i am interested to know is.. why is B10 fuel being pushed to public without prior consultation with all the manufacturers? This is so silly. putting cart before horse.

        Like or Dislike: Thumb up 25 Thumb down 2
      • bluetec on Jun 18, 2015 at 5:34 pm

        So your advanced Iriz can use this fuel? I would like to try it on your Proton. If cannot, then Proton is also dinosaur aged engine

        Like or Dislike: Thumb up 11 Thumb down 9
  • old dog on Jun 18, 2015 at 11:42 am

    instead of more liberal for the automotive industries, various techtics by politicians in monopolize and create more revenue with the cronies…Tol, Diesel, Insurance, Puspako, Spanco…Those Grey importers earning big $$ is over, and their stock pile will lead to more bankruptcy (of course if they dont need to serve bank)…
    This B10 fiasco will kill all Diesel Car market once and for all and the same time all commercial trucks will be broken down faster than ever. We have not even come to the shipping industries..

    Like or Dislike: Thumb up 26 Thumb down 1
  • C. P. MOHAN on Jun 18, 2015 at 11:46 am

    Auto-engine research and palm-oil for fuel research have not converged because their objectives are different.

    Like or Dislike: Thumb up 9 Thumb down 0
  • 3 big car companies have voiced out… What say you our beloved govt?

    Like or Dislike: Thumb up 8 Thumb down 1
    • BNaik on Jun 18, 2015 at 12:51 pm

      So what?

      Other top 2 brand P1 and P2 never says anything Govt won’t care the tiny Benz, BMW, VW and UMW.

      Govt only care for Rakyat so that Rakyat can benefit from using B10 Biodiesel.

      Like or Dislike: Thumb up 2 Thumb down 21
      • P1 and P2 don’t have diesel engine

        Like or Dislike: Thumb up 22 Thumb down 0
      • alvan on Jun 18, 2015 at 6:06 pm

        That’s bs, the intention of implements biodiesel clearly not to benefit the people as the price isn’t drop!

        Like or Dislike: Thumb up 5 Thumb down 1
  • johnathan, the mazda bt-50 sold i=n malaysia is a diesel =)

    Like or Dislike: Thumb up 3 Thumb down 2
  • EthanPhoon on Jun 18, 2015 at 12:12 pm

    of course mazda has.. it’s the BT50 that shares the same platform as the Ford Ranger T6.

    Like or Dislike: Thumb up 0 Thumb down 2
  • Rokuth on Jun 18, 2015 at 12:15 pm

    “… that Mazda’s SkyActiv-D engines will have no problems running B10. Of course, Mazda Malaysia sells no diesel models (yet?).”

    I think you are forgetting about the Mazda BT50 pick-ups. They are only sold with diesel engines in Malaysia.

    Like or Dislike: Thumb up 0 Thumb down 8
  • sudonano (Member) on Jun 18, 2015 at 12:17 pm

    Of course BMW was the first to highlight this, lets not forget, whatever said and done, they actually sell a very healthy number of diesel cars, be it the 320d, 520d, or even the X5 xDrive 30d…

    No one else sells diesel passenger cars at the volume that BMW does, so issues with B10 will definitely have a severe impact on their engines. To be fair, in the last 5-7 years, haven’t really seen much issues in the E90 320d and the newer BMW diesels, as long as proper maintenance was done. VW should really consider adapting their TDI for Malaysia, there is a market really, plus their TDI engines generally have the wet DSG, so it should be more reliable too…

    Like or Dislike: Thumb up 16 Thumb down 1
  • Bizzz on Jun 18, 2015 at 1:29 pm

    Hmmm, it’s interesting to know that Skyactive engine would be able to drink B10 diesel while Denso said their made wont be able. So Mazda injectors may be made in-house!

    Like or Dislike: Thumb up 2 Thumb down 0
  • How come Indonesia will proceed to B15 blend? Is it different?

    Like or Dislike: Thumb up 2 Thumb down 1
    • Heng Lee on Jun 20, 2015 at 4:20 am

      Manufacturers such as Mercedes in their BR 300, 400, 500 and 900 series (lorry-) engines, DAF in their LF, CF and XF Models, Scania and MAN Trucks, Peugeot Citroen Group have all approved certain models and engine types to use with B30 – B100 Biodiesel.

      Like or Dislike: Thumb up 0 Thumb down 0
  • abdullah on Jun 18, 2015 at 4:04 pm

    The government want to prop up the price of palm oil. To
    hell if your engine break down.

    Like or Dislike: Thumb up 7 Thumb down 1
  • Already we r using euro 2 diesel which is bad.. wanna introduce now biodiesel. . Bullshit. No 1 wanna use ur crap

    Like or Dislike: Thumb up 3 Thumb down 2
  • superbird #43 on Jun 18, 2015 at 7:05 pm

    i still prefer the good ol’ oily and stinkin’ diesel than this water-attracting, ‘cleaner burning’, and warranty voiding biodiesel.

    Like or Dislike: Thumb up 2 Thumb down 0
  • Jimmy on Jun 18, 2015 at 9:30 pm

    Let us have 2 options, cleaner more costly diesel, and, cheaper usable biodiesel, nationwide. Please take good care of our fixed deposits in banks and our solid gold.

    Make sure the supply is adequate; do not directly or indirectly force us to purchase what we don’t want.

    Like or Dislike: Thumb up 2 Thumb down 0
  • Passerby on Jun 18, 2015 at 11:01 pm

    now government need to find other way to offload their huge stockpile of unused palm oil sitting inside sime darby…
    no body in the world want to buy our lousy quality palm oil so no choice they go for domestic market…

    Like or Dislike: Thumb up 4 Thumb down 1
  • Sudah la najib, jangan nak menyusah rakyat lagi. Boleh rosak enjin diesel pakai B10. Jangan nak Buat benda bodoh lagi, cukup la dgn menteri menteri bodoh tu. Jalan terbaik promote minyak sawit tu kat pasaran overseas elok elok. Tak habis habis menyusah orang. Orang melayu pun dah meluat.

    Like or Dislike: Thumb up 6 Thumb down 0
  • acerlim on Jun 21, 2015 at 11:08 pm

    why dont anyone remember P1 have a wira diesel 2.0 in history ???

    Like or Dislike: Thumb up 0 Thumb down 0
  • Maslam on Jun 22, 2015 at 1:08 pm

    Ubah gaya hidup, jangan pake diesel. Kerajaan tidak pernah paksa rakyat isi B10 diesel. Bersyukurlah Malaysia masih Aman.

    Like or Dislike: Thumb up 0 Thumb down 0
  • Man Toya on Jul 03, 2015 at 8:31 am

    I agreed with some of the comments here as such:-
    Lets have 2 option of diesel fuel. Manufactures and consumers can have option to choice which grade of diesel fuel to use depending on the engine type they use. The government cannot force the market to agreed with the implementation of the Bio-Diesel. Manufacture projection and direction of business strategy for nationwide diesel vehicle sales must be considered as they are promoting greener and cleaner advance technology diesel engine.
    This come with high price and quality combustable fuel and meant for the high income consumers. The proposal of B10 bio-diesel fuel nationwide is merely a gimmick for the plantation industries to promote their product.

    Like or Dislike: Thumb up 1 Thumb down 0

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