Hi My name is Craig Kirkman (The Repair Specialist) and I am the creator of this Youtube Channel, this video and its content.

About your car....
During normal driving today the average car can stop and start as many as 18,000 times a year, and all that idling in traffic or waiting at junctions causes microscopic wear in your engine. In the latest industry test, New Castrol MAGNATEC STOP-START 5W-30 A5 gives significantly less wear in stop-start operation New Castrol MAGNATEC STOP-START 5W-30 A5 has intelligent molecules that cling, and form a self-healing layer so it's always ready to protect at each of the critical stages of stop-start driving. Castrol MAGNATEC STOP-START 5W-30 A5. Instant Protection From The Moment You Start. Every Time You Start. Here is an Amazon link to the oil I have referred to - amzn.to/2Vg6WKT

Please ensure you choose the correct oil code for your engine as directed by your user manual. There is an opportunity to enter your car REG details for further ans easier finding of parts for your vehicle.

If you purchase you are Not buying the product from us (The Repair Specialist), you are buying from an Amazon seller.

My mission is to take subjects that can seem quite daunting and somewhat difficult to understand and explain them in such a way that everyone can understand and benefit. All too often things are explained to us in a way that is difficult to grasp. I really hope that all of my tutorials are understandable by most, if not all, people who wish to view them.

I want to help people understand as I was helped by some fantastic mentors during my years as a University student, in Science, and a trainee apprentice as an engineer. In fact, I could NOT have became a qualified repair engineer or a Science graduate if I never had these wonderful people in my life.

Sadly, some of them are no longer with us to see these videos, which I really want to dedicate to them. More than anyone else, I want to dedicate these to my Father, who is still a practicing engineer, for always pushing me into this field and ensuring I applied my mind to it, and for my amazing late mother, who nurtured, cared, loved and motivated me all of my life. When I was down she would always reach down and stand me back up again, telling me I was worth something. I only wish I could thank her in person and show her these videos. I realise now that she was my biggest and most amazing mentor.

Thank you for 40 Golden years mom!

I hope you find this video useful. I have tried to explain the meaning behind the codes you find on the engine oil containers. It basically explains their meaning and why they have been given their particular codes.

Codes may include 5w-30, 10w-30, 10w-40 or 15w-40, to name just a few available.

Many thanks indeed

Craig Kirkman (Owner and Creator of the 'The Repair Specialist' Channel)


    • Wafik Awad
      Wafik Awad

      What is the first choice engine oil for kia cerato 2011(51000km)in lebanon(middle east) thnx.

      about 2 days ago
    • internet 123
      internet 123

      Very good & informative

      about 3 days ago
    • Moaz Salem
      Moaz Salem

      what does 30 mean Is it the volume that goes though the meter in that case the higher the viscosity the lower the number but you said the higher the viscosity the higher the number please answer my question sir

      about 3 days ago

      great video

      about 4 days ago
    • Danish Fawaz
      Danish Fawaz

      best explanation. So clear

      about 5 days ago
    • Gerald Moore
      Gerald Moore

      very clear and concise thanks

      about 9 days ago
    • Rakshit Sonowal
      Rakshit Sonowal

      quite informative! thanks for sharing.

      about 12 days ago
    • Tejas Padhye
      Tejas Padhye

      So what do you recommend for a 125cc motorcycle engine

      about 12 days ago
    • KK vidz
      KK vidz

      I found this the best one explaining about engine oil grades yet. You cleared my concept. But please use a dedicated mic for clear voice. Thank you!

      about 12 days ago
    • Harpal Singh
      Harpal Singh

      5w-50 thanks to the great personality who cleared all the doubts about oils 😀

      about 15 days ago
    • biggles258

      Perfectly clear. Many thanks. Thumbs up and Subscribed.

      about 20 days ago

      Just mix one litter of 5/20 and one litter of 5/30 that way you will have 5/25 .

      about 21 day ago
    • MR Stonedalot
      MR Stonedalot

      Well explained . Thank you

      about 21 day ago
    • Muhammad Awis abd Shahadan
      Muhammad Awis abd Shahadan

      Jika untuk perjalanan jauh dan lasak,sae berapa yang sesuai untuk ketahanan engine ya?..next

      about 23 days ago
    • Frost

      So Wait viscosity goes up (5 to 30) when heated to 100 degrees? This makes no sense

      about 23 days ago
    • Zawlin Tun
      Zawlin Tun


      about 25 days ago
    • gsxr88

      Thanks very detailed. Great video!!

      about 29 days ago
    • Mr Cellkill
      Mr Cellkill

      I use 5w40 (Berlingo Tu5jp4 340.841km) and it works great.

      But i got to thick oil in my gearbox 75w-90.

      And thank u for a great video.

      about 1 month ago
    • linkup99wa

      Would a high SAE number help a diesel engine that burns oil? I got smoke coming out of my car once it heats up and is under pressure. I'm wondering if I try something that is thicker at operating temperature than the 0W-20 I'm using now.

      about 1 month ago
    • Theo De marco
      Theo De marco

      If I use 5w30 but says I should use AV but by accident I used FR is that a problem. It’s a diesel Audi I made the mistake on oil change. Let me know your thoughts please. Thanks in advance.

      about 1 month ago
    • Joseph Molebatsi
      Joseph Molebatsi

      its interestiong to learn more about viscosity of oils

      about 1 month ago
    • carl arthur
      carl arthur

      Very simply explained , found this quite imformative, Thanks.

      about 1 month ago
    • Sandeep Mishra
      Sandeep Mishra

      what is W

      about 1 month ago
    • chassisaligner

      your a very smart person and your information in regards to small gas repair is very informative so stay with you have perfected and don"t believe the bullshit the oil companies try to proclaim as they are only doing what they are told to do like bullshitting the public

      about 1 month ago
    • TheRepairSpecialist
      TheRepairSpecialist In reply to chassisaligner

      Yes, I do agree that it is a very controversial subject and just about everyone I know in the trade have mixed feelings about this. I understand your frustrations. Thanks

      about 1 month ago
    • chassisaligner

      bullshit!!!!!! when you look at your oil pressure upon cold start up it is thicker and your oil pressure is higher .
      when the engine oil is at 100 degrees centigrade the oil is much thinner and oil pressure is lower. prove to everyone that knows this beside what the bullshit the SAE proclaims

      about 1 month ago
    • TheRepairSpecialist
      TheRepairSpecialist In reply to chassisaligner

      Yes, I do agree that it is a very controversial subject and just about everyone I know in the trade have mixed feelings about this. I understand your frustrations. Thanks

      about 1 month ago
    • Lee Dee
      Lee Dee

      Very helpful thanks

      about 1 month ago
    • Mauro De Giorgi
      Mauro De Giorgi

      Well done sir

      about 1 month ago
    • Abdul Rehman
      Abdul Rehman

      My question
      What is the best oil for 4strock engine with air cool system?

      While the atmosphere temperature remains 35-48'

      Plz guide

      about 2 months ago
    • TheRepairSpecialist
      TheRepairSpecialist In reply to Abdul Rehman

      Hi, do you have the manual for your engine? if not, it may be best to do an internet search on your make and model. The reason being is that oil types are quite specific to types and manufactures make engines in this way. Thanks

      about 2 months ago
    • Nasser Al-Ghamdi
      Nasser Al-Ghamdi

      5w 20 for jeep it okay on hot weather like 45 up to 60 °C

      about 2 months ago

      thanks for your great explanation, I have a question, my ford Explorer recommends 5W-30, BUT i live in the caribbean so temperatures never goes under 20 most likely between 25 to 30 degrees all year long, so we never have those 5 or 10 degrees celcius, based on that what do you think should be the best oil I should use?

      about 2 months ago
    • Amgad Ghaly
      Amgad Ghaly In reply to REACTORVISUAL

      10 w40

      about 7 days ago