Why does the oil in a diesel engine darken immediately

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  • Опубліковано 12 січ 2025

КОМЕНТАРІ • 55

  • @davidyvesmachado4819
    @davidyvesmachado4819 2 місяці тому +1

    Im having my first diesel car and I just checked how dark the oil was I got crazy! (And the vehicle isnt old, its running smooth) Now having this video and explanation is really nice.

  • @oztint6032
    @oztint6032 Рік тому +5

    Great video, i really like this channel because of your practical experiments, love from mexico guys.

    • @opelservicekyiv
      @opelservicekyiv  Рік тому +1

      Thanks a lot. We are pleased. Hello from Ukraine.

  • @bepacman
    @bepacman Рік тому +16

    Great explanation but i would have to differ with you on the reason. While you are correct of all of the oil properties, you are correct about the dieselengine compression being higher and you are correct about the soot; the reason is not clear. The true reason and taking in count the above is that when you start the engine in the morning the components like the piston rings are not at operating temperatures, they are cold, this allows combustion by product (soot) during the power stroke to go by the piston rings and in to the oil sump making the oil dark almost since the firat time you start the engine with new oil. After operating for some minutes, the piston rings expand and creat a better seal in the combustion chamber therefore combustion byproduct will not enter the oil sump. The cause is thermal expansion. Good video.

    • @opelservicekyiv
      @opelservicekyiv  Рік тому +2

      Thank you so much for watching and sharing your thoughts. It adds to the treasury of our ideas and knowledge 👍

    • @Simon-dm8zv
      @Simon-dm8zv 8 місяців тому +2

      But the same thermal expansion happens in petrol engines right?

    • @bepacman
      @bepacman 8 місяців тому +1

      @Simon-dm8zv Yes, but the petrol engines inefficiency makes it warm up faster, and combustion happens more rapidly, heating all elements quicker making piston rings seal faster, I would not define combustion as cleaner on the petrol engine but it does not have the amount of soot generated in the compression fired Diesel engine, unless excess petrol is being burnt but even then, but even then its not as much soot as diesel. Both combustion processes are completely different but do the same work, rotate the crankshaft.

    • @Simon-dm8zv
      @Simon-dm8zv 8 місяців тому +1

      @@bepacman That makes sense. Thanks!

  • @jounistactics
    @jounistactics 6 місяців тому +2

    My oil was dark after the change and I was about to go back to the shop that changed my oil to complain, but I might relax after watching this. Interstingly, I have two diesels and the other one still has has clear oil after a few weeks since the oil change.

  • @CC-zm9fw
    @CC-zm9fw Рік тому +5

    Great video, especially the comparison of 3 different oils' colour on the paper towels. However, you didn't get much use out of the transparent sump after all the effort of making it. Please could you do a video of the transparent sump with the engine running at different speeds (and also measure how many mm the oil level drops when the engine starts, and when the engine is running at higher rpm)?

    • @opelservicekyiv
      @opelservicekyiv  Рік тому +2

      Thank you, I'll add it to my list of things to do. Then we will select a suitable car and material. It turned out that the review is not available everywhere.

  • @shyamposhala1744
    @shyamposhala1744 2 місяці тому +1

    Great explanation thank u so much 🙏🏻

    • @opelservicekyiv
      @opelservicekyiv  2 місяці тому +1

      Thank you for your feedback and watching our video

  • @realpremier
    @realpremier Рік тому +4

    Great video!

  • @Trammael
    @Trammael Рік тому +2

    Thanks for explanation

  • @AccountantByDay553
    @AccountantByDay553 Рік тому +5

    Thank you!!

    • @opelservicekyiv
      @opelservicekyiv  Рік тому +2

      You're welcome. Thank you for rating the video 😀

  • @vishwav20
    @vishwav20 4 місяці тому +2

    So are you saying I shouldn't have bought a new can of engine oil to change myself after I felt that the service station guys were lying of oil change?

    • @opelservicekyiv
      @opelservicekyiv  4 місяці тому

      After changing the engine oil in a diesel engine, it turns black almost immediately

  • @nagyba
    @nagyba Рік тому +2

    Great video by car mechanic 🎉

  • @Nupa-bb1xs
    @Nupa-bb1xs 3 місяці тому +1

    Some engine don't blacken lubricant for example india new holland tractor "New Holland 5630" , used oil looks like Petrol car oil. Same color as you put new.

  • @Paul-zz1cr
    @Paul-zz1cr Рік тому +7

    Can never waste water . Unless you take it of the planet. Same water that's been here for millions of years

  • @yaragundlarajesh8616
    @yaragundlarajesh8616 Рік тому +1

    Hi, my car has been completely submerged under water for 10days, post i didn't started and given to service center.
    Can you please tell me whether my car works?

    • @opelservicekyiv
      @opelservicekyiv  Рік тому +1

      Engine may need repair

    • @yaragundlarajesh8616
      @yaragundlarajesh8616 Рік тому +1

      @@opelservicekyiv what about the electrical components like ECM,and another remaining main modules sir?
      Can you please tell whether repair is enough or replacement is necessary?

    • @opelservicekyiv
      @opelservicekyiv  Рік тому +1

      @@yaragundlarajesh8616 You need to assess the condition; some things can be repaired, while others cannot. Disassemble the unit and inspect

    • @yaragundlarajesh8616
      @yaragundlarajesh8616 Рік тому

      @@opelservicekyiv Thank you so much for your response

  • @johnelliott7375
    @johnelliott7375 4 місяці тому +1

    I have a 7.3l Powerstroke diesel engine in my truck and it doesn't get near that dark after 3-5 thousand miles. I will change it and it doesn't get colored until 3k miles and when I change it why will my oil stay clean. I think I have a very rear motor that it will not get filthy like the rest of them.

    • @kyleclemente5939
      @kyleclemente5939 3 місяці тому

      @@johnelliott7375 curious. Did you run HSS stiction eliminator in this ever?

  • @ROBTOP_Top-z4
    @ROBTOP_Top-z4 Рік тому +1

    Май инглишиз вэри бэд🤷‍♂️.
    Плиз спик он юкрейн анд рашн туу.🤝
    Фэнкью вери мач🙂.

  • @اسطوري88
    @اسطوري88 Рік тому +1

    Are there any approved mechanical courses?

    • @opelservicekyiv
      @opelservicekyiv  Рік тому

      There are educational institutions, but I can’t tell you about courses. Thank you

    • @اسطوري88
      @اسطوري88 Рік тому

      And what because I don't know him

  • @rihardokl1447
    @rihardokl1447 Рік тому +1

    Отлично! Моя Astra K 1.5 crdi универсал шумит очень сильно в задней части. Резину поменял. Что можно сделать дополнительное чтобы так не шумило. Раньше имел Astra G и было на много лучше. Почему столо хуже. Дякую!

    • @opelservicekyiv
      @opelservicekyiv  Рік тому

      Может быть проблема в ступичных подшипниках. Потрібно слухати.

  • @Альгіцид
    @Альгіцид Рік тому +1

    Доброго дня, ви в Києві працюєте, чи вже ні?

    • @opelservicekyiv
      @opelservicekyiv  Рік тому +1

      Добрий день, працюємо з 9 до 18, крім неділі

    • @Альгіцид
      @Альгіцид Рік тому

      @@opelservicekyiv підкажіть будь ласка, дизель 1.5 на 90квт на Астрі 20 року можна розглядати до покупки з пробігом 130тис. Км.

  • @awaisiqbal8934
    @awaisiqbal8934 7 місяців тому +1

    It remains black infinitely

  • @williamdgmartin
    @williamdgmartin Рік тому +1

    Isn't there a war in Kyiv?

  • @zdarova-b
    @zdarova-b Рік тому +2

    Привет

  • @AlexeyRybkin
    @AlexeyRybkin Рік тому +1

    Хорошее

  • @aciddiver1978
    @aciddiver1978 Рік тому +1

    Better having gas car.

  • @CarChoice777
    @CarChoice777 Рік тому +1

    Надо раз в 5-7000 масло менять!

  • @1mandanceparty
    @1mandanceparty Рік тому +1

    You guys ever work on a calibra dtm touring car? 👀👀👀
    🇺🇦🫡