Is Synthetic Motor Oil Better For Your Car?


hello everyone and welcome in this video we’re going to be talking about why synthetic motor oil is better than conventional motor oil and I’m also going to be including a demonstration to help prove some of these points now there’s all kinds of different ways in which you could talk about the differences between synthetic and conventional motor oils but we’re going to be focusing on simply viscosity viscosity is an oils resistance to flow so a higher viscosity means more resistance to flow or a thicker oil and a lower viscosity means less resistance to flow or a thinner oil now before understanding the benefits of synthetic motor oils like this Pennzoil Platinum derived from natural gas we first need to understand the rating system used for motor oils you’ll often hear 5w30 or 0w 20 as a rating used in cars today the first number followed by a W is the cold rating W stands for winter and this means the oil behaves like an SAE 5 grade motor oil while cold but at operating temperatures at about 100 degrees Celsius it operates like an SAE 30 grade motor oil now 30 is obviously higher than 5 so it may seem that at higher temperatures the oil is going to be thicker but that’s obviously not the case as things thin out as they heat up and so it’s helpful to look at a plot of kind of what we’re talking about here so here we have viscosity thicker at the top thinner at the bottom here we have temperature cold you know around zero degrees Celsius versus hot you know around 100 degrees Celsius and so when you’re looking at this if you were to plot an SAE five straight grade oil it would look something like this you know a thinner viscosity than an SAE 30 straight grade oil and then a multi-grade viscosity is going to have properties of both of these so at lower temperatures it’s going to act like an SAE 5 oh wait oil but as you can see it’s still going to thin out as it gets to hotter temperatures where it acts like an SI a 30 grade oil and so here if it were to just be a 5 it’d be too thin for operating temperature to protect the engine but if it were to operate like an SI 30 I’d be too thick for start-up and so you have these multi grade characteristics so you can kind of have the best of both worlds you can start it up without any issues and you can have plenty of protection once it’s at operating temperature so how would you create a multi grade conventional motor oil well you’re going to start with something similar let’s say we’re making a 5w30 you’re going to start with something similar to a straight grade SAE 5 motor oil and then you’re going to have additives which you add to this in order to give it those 5w30 characteristics so you can add pour point depressants and what these will do is lower the viscosity at low temperatures and then you can add viscosity index improvers and what these will do is increase the viscosity at high temperatures and so kind of a way to think about how these viscosity index improvers work you’ve got these polymers that are all balled up when they’re cold and so it’s very easy for them to pass by one another so you know you’re going to have a low viscosity and then as they heat up they expand out and so they get tangled more easily and so that increases the viscosity because it’s less easy for them to pass by one another so you thicken the oil at high temperatures now of course it’s still thinner than what it will be at at low temperatures but that said it still has a thick enough grade to it that it protects your engine at those higher temperatures now the cool thing about synthetic motor oils is that they already have a multi-grade from the base oil so the base oil can be formulated with synthetic motor oils based on the process of creating it so that already has this multi-grade characteristic and so you don’t have to add as many or any of these you know different additives in order to change the characteristics of its viscosity and so what that means is over time it’s going to retain its viscosity grade much better than a conventional motor oil so looking at the oil change interval here we have viscosity versus temperature and this is at the beginning of your oil change interval so you’ve just changed your oil you’ve got brand new oil in your car this is at the end so once you you know you need to change the oil at this point and so if you’re looking at conventional versus synthetic originally if you’ve got 5w30 their curves are going to look exactly the same in here so here’s that SAE 30 here’s the SAE 5 and you’ve got that exact same curve for both conventional and synthetic but as I mentioned the base oil / synthetic is already that multi grade so over time it doesn’t really break down as much you know you are going to have deposits and things like that which are going to get in there and thicken the oil but it’s going to look very similar at the end of your oil change interval versus your conventional is going to get thicker at low temperatures and it’s going to get thinner at high temperatures because these additives have started to break down and so you’ll get much better protection with synthetic motor oil at the end of your oil change interval if you’re using synthetic than if you were using conventional you’re going to have less protection because it’s thickened at lower temperatures meaning you won’t have as much flow at a cold start and it’s gotten too thin at higher temperatures meaning not enough protection and so you know you may be thinking okay well does this mean I can use a synthetic oil for longer oil drain intervals and that’s not necessarily the case at all you should certainly always go with whatever your car manufacturer recommends because there’s all kinds of other additives in these motor oils both synthetic and conventional which I haven’t discussed in this video but anti wear dispersants anti foam detergents rust inhibitors corrosion inhibitors all of these are going to be in both of these motor oils conventional and synthetic and they will wear out over time and so for both cases you’re going to need to replace the oil at the same interval you’re just going to have better protection with the synthetic towards the end of your interval than you would with a conventional based on the viscosity differences okay so now let’s check out a demonstration so here we have four heavy-duty engine oil samples all cooled to negative 35 degrees Fahrenheit on the Left we have used and new conventional 15 w 40 and on the right we have new and used in a one full oil drain interval of use synthetic 5w 40 motor oil now at this point you may be thinking wait a minute this isn’t a fair comparison because the synthetic has a lower cold viscosity rating so of course it will flow faster at low temps you’re absolutely right however it’s not the main purpose of this demonstration first off formulating a motor oil for 5w 40 rating requires the use of a synthetic base oil as the synthetic base oil is what gives the oil the lower viscosity rating and second and perhaps more important to the viewer is that you can see the difference in viscosity between the used and new synthetic oil is very minimal whereas the difference in viscosity between the used and new conventional is very large so what does this mean for the consumer what this demonstrates is that towards the end of your engine oil drain interval for your car if you’re using conventional oil you will have significantly change the viscosity properties of your oil meaning less protection using synthetic however means you’ll retain the viscosity properties of the oil for a longer duration and thus your engine will be better protected towards the end of the oil train interval so thank you all for watching and of course a huge thank you to Pennzoil for sponsoring the video if you guys have any questions or comments feel free to leave them below everyone and welcome in this video we’re going to be changing the oil in my 1999 Acura Integra and big thanks to Pennzoil for sponsoring this video they have a line of synthetic motor oils which are created with natural gas as the base oil now before we get into the oil change let’s talk about why you might use natural gas as a base oil so an oil is composed of about 80% of a base oil and then the other 20% of what’s in

100 Comments

  1. Ryan Miller said:

    It’s time to buy a Tesla so I don’t have to think about this

    February 25, 2019
    Reply
  2. Billy GoldBlum said:

    just buy synthetic when its half off. Its pretty common

    February 25, 2019
    Reply
  3. Billy GoldBlum said:

    who even cares…everything else goes way before a motor these days

    February 25, 2019
    Reply
  4. Larry M said:

    If Synthetic isn't better, then why do they sell it?

    February 25, 2019
    Reply
  5. Smarmy Fellow said:

    to and fro piston motion produces white lotion.

    February 27, 2019
    Reply
  6. Rxonmymind said:

    1986 Toyota Tercel 275k miles
    2006 Toyota Sienna 336k miles and still running.
    2009 Lexus RX 350 (currently) 250k miles
    All conventional oil. Don't see the point of spending extra $$ for synthetic.

    March 5, 2019
    Reply
  7. Ronald Carson said:

    Depends on mileage of the car.

    March 6, 2019
    Reply
  8. kyaw pe said:

    Hi sir I just when asking about the oil We have the book [5 W20] That so we can put [5 W30] that work

    March 6, 2019
    Reply
  9. Average Joe said:

    I use olive oil (extra virgin). More expensive than vegetable oil but worth it.

    March 6, 2019
    Reply
  10. Mikey Virtnan said:

    I pour canola oil into my engine with a tablespoon of sugar

    March 7, 2019
    Reply
  11. Terry MM said:

    q raro tiene el titulo en espanol y el tutorial en ingles….q mal no enganes a la gente

    March 7, 2019
    Reply
  12. James Jackson said:

    Cut the mumbo jumbo. WTF is the conclusion dumbass

    March 7, 2019
    Reply
  13. Nedelescu Gabriel said:

    6:35 thank me later

    March 8, 2019
    Reply
  14. KEV LAR AKA THE SUPREME TROUBLE MAKER said:

    Synthetic oil makes my car take an extra five minutes to get heat from the heater.
    There I said something bad? About synthetic besides the price.

    March 9, 2019
    Reply
  15. Orlando Lindsay said:

    I use synthetic oil all the time.

    March 9, 2019
    Reply
  16. thunder bolt said:

    How many People drive their cars 200K these days ? Most people do not put eneough miles on their Vehicle to justify the use of very expensive synthetic oil !

    March 10, 2019
    Reply
  17. C said:

    i didnt even know motors needed oil

    March 11, 2019
    Reply
  18. RED S7VN said:

    Or you just buy a GTL like Shell Helix Ultra. If it's good enough Ferrari in Formula 1 to get enough for your car. Gas-To-Liquid (GTL) process, that converts natural gas into a crystal-clear base oil with virtually none of the impurities found in crude oil.

    March 11, 2019
    Reply
  19. Koriakinides said:

    conventional, conventional, conv… mineral.

    March 11, 2019
    Reply
  20. Anthony Ivan Aglugub Jr. said:

    Wow, SAE – Society of American Engineers Completely Dominated The World Oil Ratings.

    March 13, 2019
    Reply
  21. Jake said:

    Engineering Explained what oil do you use on your vehicles?

    March 13, 2019
    Reply
  22. Charles Hansert said:

    Ok I understand what your saying but why does the purple line contradict what your saying… 5w is the resistance at start up which is lower than a resistance of 30 and therefore 5w is thinner. This thinner oil has additives which expand during the heating process and make the resistance of the oil go up to 30. That would mean on the chart your showing the purple line would go up to the thicker part of the scale to 30 resistance.. YOUR GRAPH SHOWS THE PURPLE LINE BELOW 5W AS IF IT WAS GETTING THINNER MEANING IT HAS LESS RESISTANCE. Are you just illustrating what a 5w oil would normally do without the additives? Your words and the chart were not adding up and made it more confusing .. although i did learn a lot here . am i missing something ? i just want to make sure Im not reading the chart wrong…

    March 17, 2019
    Reply
  23. JC said:

    Garbage. So was the demonstration. It proves NOTHING. You should've used something like a VISCOSITY COMPARATOR to get actual, verifiable info. Not just arbitrary results that literally mean nothing.

    For being an "engineer" you really aren't that intelligent, imo. Probably why I critique every video I've ever seen from you. There's ALWAYS something wrong.

    March 19, 2019
    Reply
  24. Mark Johnson said:

    I didn't understand the explanation for why 15W-40 was used for the conventional while 5W-40 was used for the synthetic, and why it's not an unfair comparison (starting at approximately 5:50). Can anyone explain?

    March 22, 2019
    Reply
  25. Alex Koh said:

    For test you could use 15w40 synthetic oil too… not 5W

    March 22, 2019
    Reply
  26. Ricardo Mateo said:

    what is the difference between synthetic oils aside from prices, does it worth buying the most expensive one rather than a little bit cheaper. what if you use a cheaper one from refutable manufacturer, will it really affect your car's performance

    March 23, 2019
    Reply
  27. James said:

    So you mean dont run a 15w40 conventional in your civic lol

    March 26, 2019
    Reply
  28. Google User said:

    The short answer is NO!

    March 30, 2019
    Reply
  29. Google User said:

    Synthetic oils are promoted by TREE HUGGERS and socialists that support Agenda 21.
    ……
    They use fake oil pour tests and fake facts to support theirs
    fake claims

    March 30, 2019
    Reply
  30. Meyer said:

    4 second answer: 4:58
    Watch the entire video only if you want to understand the physics behind it.

    April 2, 2019
    Reply
  31. Peter Fountotos said:

    Wait, you need oil in your car?

    **.

    April 2, 2019
    Reply
  32. Antramx Media said:

    So can I use a synthetic oil in an old car even after using conventional for years?

    April 4, 2019
    Reply
  33. Matt Giorgi said:

    Any options on what is the best fully synthetic oil for motor sports applications?

    April 5, 2019
    Reply
  34. Google User said:

    The FACT is the 15w-40 is FAR superior to the 5w-40 since it uses FAR less fragile viscosity improvers.
    ……..
    The wider the range the less stabil the oil

    April 8, 2019
    Reply
  35. Simon Tallboy said:

    I drive tractor trailers for a living. One of my employers used synthetic oiling his trucks, engine, transmission and diffs. He followed the manufacturers oil change guide lines and had the oil analyzed. This was 15 years ago, and both trucks are still working. One has a new rear diff, but other than that no major repairs. Also I bought a used Dodge minivan with the 3.3 v6. It had been on synthetic oil from its first oil change. I sold it when I hit 400000km, and it ran like a top and didn't burn oil. These 2 things have led me to use synthetic oil in all my vehicles since then, and I've had no major problems.

    April 8, 2019
    Reply
  36. umefunasone together said:

    your so handsome!!

    April 12, 2019
    Reply
  37. Simon Long said:

    Automatic transmissions used to use straight whale squeezings, Apparently it was hard to match when they stopped squeezing whales.

    April 16, 2019
    Reply
  38. Ronnie Maloon said:

    The answer is, yes.

    April 16, 2019
    Reply
  39. Jerry Newberry said:

    The W stands for Weight or viscosity. Standards test is heated oil timed through a funnel for the test. Read the testing standards book. READ!!!

    April 19, 2019
    Reply
  40. Shadow Warrior said:

    What language is he speaking

    April 19, 2019
    Reply
  41. freebieman104 said:

    Lmao! You sound JUST like Drift0r!!

    April 19, 2019
    Reply
  42. D L said:

    this guy is nut…the way he talks he just drive me crazy what a nerd ..i don't think he has a girl friend … STOP talking…

    April 19, 2019
    Reply
  43. Steven Kjeldgaard said:

    Great video, easy to understand, thanks much….
    SteveK

    April 20, 2019
    Reply
  44. George Judd said:

    You need to slow down!

    April 21, 2019
    Reply
  45. Dustin Roberts said:

    Can you test amsoil 10w40 metric ,Mobil 1 10w40 T4 and the red line version of the same?

    April 26, 2019
    Reply
  46. mrrmsfucker said:

    5:31 your welcome.

    April 30, 2019
    Reply
  47. Muhammad Agha said:

    Can you experiment with using lightweight oil and see if it increasing mileage? Like 0w-20 to 5w-30 synthetic and seeing if it increases fuel economy and still protects the engine.

    May 1, 2019
    Reply
  48. NelsonR. Candelaria Mercado said:

    Im a chemical engineer and i was so confused with this rating. I tought the 5 and the 30 where the viscosity values. Now i inally understand this. Youre the best!

    May 2, 2019
    Reply
  49. Chawit Pilasombut said:

    What do you think about flushing engine by using flushing oil? Is it bad or good?

    May 6, 2019
    Reply
  50. Leonard heckathorn said:

    I hate you

    May 13, 2019
    Reply
  51. Huynh Linh said:

    That's a lot of talkin

    May 15, 2019
    Reply
  52. MegaGouch said:

    That test was a tad ridiculous. What engine would recommend using 15w40 for -35F temperatures?
    It doesn't really matter how poorly it performs at that temperature range if you are never going to use it under those conditions.

    Yes synthetic oil is better than mineral oil, but provided you are using the correct grade and spec for our engine and change it at the required interval there is no disadvantage to using mineral oil.
    As pointed out in the video, the base oil may break down less but the additives still break down and you will need to replace at the same intervals regardless. If your engine is designed to work with 15w40 and you operate it in the correct temperature range there is no advantage to using a 5w40.

    May 19, 2019
    Reply
  53. Charles Long said:

    One problem, people change their own oil, and take the used oil to the recycle yard. At the recycle yard natural and synthetic oils are mixed. The recycle yard vacuum distills the oil and separates it on the basis of viscosity. Then sells the oil as reclaimed oil, typically to large marine vessels to use as lube oil. The marine vessels pump the oil through the engine once and discard it into the ocean. One ocean going marine vessel can discharge 80,000 gallons of oil in one ocean crossing.

    May 20, 2019
    Reply
  54. Sarah Wu said:

    it's so clear that you enjoy your work and enjoy explaining things to other people. your explanations are very clear and helpful. keep up the passion and good work.

    May 21, 2019
    Reply
  55. Jeff Cobain said:

    what about the price?

    May 22, 2019
    Reply
  56. Steve Forbin said:

    interesting question …you might want to consider the cost factor… A traveling sales person might trade off more often and not really get long life benefits. Where a family man might try to go the distance but must consider the total cost per mile overall. Others might want to maximize the higher resale value while older want to buy that last car and drive it till they die off and of course keep cost down. I have 187,000 miles on my 350 v8 1987 1/2 ton pickup and enjoy the valve body fuel injection no choke issues.  Low cost property Values are also an issue. Electric cars might be nice but if you pay more in taxes your loss is in the tax man's favor. Not in your pocket book. Hello tax slave. You might want to consider making the jump to the higher wage states and that "Make America Great Again" but don't jump out of the frying pan into the fire. Check out the net return and find a good boss and not a slave driver or sob and  move up in net return in your pocket. Watch out it is not what you earn but what you have left over after taxes and cost of living that sets your Standard of Living and your net savings for retirement. Know your budget and plan ahead.

    May 23, 2019
    Reply
  57. AHMED ALI KHAN said:

    10w40 and 20w40 my Q is at 100 degree C both grade will react the same to the engine parts?

    May 23, 2019
    Reply
  58. Alexander pentz said:

    thanks man

    May 24, 2019
    Reply
  59. Dean Howell said:

    I drive a 1998 Dogde 2500 V10 4X4 w/265000 miles right From the first oil change i Ran MOBIL1 10-40 and K&M H4200 fillter and it still pulls like a BEAST!

    May 26, 2019
    Reply
  60. R G said:

    Good job at explaining the deltas between synthetic and conventional motor oils. Your presentation was direct, straight forward, and easy to understand. Keep up the good work.

    May 29, 2019
    Reply
  61. Thomas Conrow said:

    Nice talk, thank you. That viscosity demonstration was very poor. Those used oils were far too dirty to have been used in a properly maintained engine for only the recommended amount of time.

    June 1, 2019
    Reply
  62. Joshua Prince said:

    I started using synthetic oil at around 75,000 miles on my car. Which was not long after I bought it. I had no clue what was in it before but ever since then it would burn through the synthetic oil at an alarming rate! I am now going to motorcraft.

    June 3, 2019
    Reply
  63. Dipendra Singh Shekhawat said:

    Great information. BUT why you compared 15w40 with 5w40????

    June 4, 2019
    Reply
  64. snowdaysrule2 said:

    So would changing your oil with the incorrect thinner than specified grade of conventional oil actually extend its service life since the oil gets thicker over time?

    June 5, 2019
    Reply
  65. Vipul Jadhav said:

    Which is good for 1.9tdi skoda octavia
    0w40 fully synthetic or 5w30??
    Friends.
    I use Mobil 1 0w40 fully synthetic

    June 5, 2019
    Reply
  66. Adithya Krishnan said:

    Chetta epozhokkeya engine oil maattendath??

    June 5, 2019
    Reply
  67. Mick Jager said:

    I had a 90 chevy truck I bought with 250K and sold with 312K no oil related issues. Current have 97 chevy truck with 250K, 2003 focus with 185k and 2008 taurus with 135k. In all I used/use conventional oil and 5k change intervals.

    June 7, 2019
    Reply
  68. paulanderson79 said:

    It's not about viscosity alone. Here in The EU there is no market for mineral oils.

    June 16, 2019
    Reply
  69. ItsCalebsChannel said:

    All oil has to meet manufacturer policy and federal regulation, I don't understand how people think the huge brands make the best when any company has to do the same regulation for oil and has to be in specification.

    June 20, 2019
    Reply
  70. njt002 said:

    Doesn't the oil just come in the gasoline?

    June 20, 2019
    Reply
  71. Sudharshan Vinayak said:

    Explanation in short 5:32 to 6:51

    June 28, 2019
    Reply
  72. Stevie Jo said:

    Ahhhhhh math! I hate math! My head hurts!

    July 11, 2019
    Reply
  73. Richard Glover said:

    Your putting me to sleep.

    July 13, 2019
    Reply
  74. Christian J. Houle said:

    You retarded wantabe smart asses retards !!! Get the fukkk out of here !!!!! All a hoax, build things that the runs with oil and sh.. up .
    Buddy you pissed me off

    July 15, 2019
    Reply
  75. MrPepper312 said:

    I use Crisco

    July 15, 2019
    Reply
  76. Rehan Tahir said:

    +Engineering Explained

    If car goes on mileage of 200000 KM,Which engine oil is best for car on lubrication point of view and which could not consumed or loose in engine on every 3000KM? What you suggest

    July 18, 2019
    Reply
  77. Polo Sucks said:

    Nope

    July 20, 2019
    Reply
  78. WarmBeer Gaming Dude said:

    I had a 98 nissan altima that I didn’t change the oil in for 2 years. 🤣. I remember my mechanic saying he’d never seen oil that thick and purple

    July 22, 2019
    Reply
  79. Lionel Mandrake said:

    Great video. Concise, rapid, clear.

    July 25, 2019
    Reply
  80. Mag1c G0l3m said:

    I use vinegar in all my car

    July 28, 2019
    Reply
  81. Aghilas said:

    i fill my car with synthetic BRUH

    July 30, 2019
    Reply
  82. Valik Toma said:

    Good video, very eye opening to see conventional oil loose so much of its property after use.

    July 31, 2019
    Reply
  83. archie stewart said:

    Question which is better oil for my b18 engine

    August 1, 2019
    Reply
  84. Tanto Sendjaja said:

    6:32 Do we arrive at the end of engine oil drain interval (oil becomes thick) by time, miles, cold start cycle, or cold-hot-cold cycle?…

    August 1, 2019
    Reply
  85. RUDYS ROAD said:

    I usually just piss in my gas tank & diarrhea in the oil hole 🕳…

    August 6, 2019
    Reply
  86. Bright Boy Cherry Blossom said:

    How old are you? You look like anywhere between 25 and 35

    August 6, 2019
    Reply
  87. Austin Duffield said:

    What is negative 35 F 😂

    August 6, 2019
    Reply
  88. Doug G said:

    Nice!

    August 7, 2019
    Reply
  89. Srk7028 said:

    One of the worst explanation

    August 11, 2019
    Reply
  90. Tyler Strong said:

    Ok but I've been told that synthetic oil actually wears out your seals fast. So I've used regular 10w30 because im worried that all my seals in my motor will be worn out way to fast. I can now see its def better for the motor but what about the gaskets and seals. Would love for you to do some testing on that in another video.

    August 25, 2019
    Reply
  91. Chris Henicke said:

    The only time I would ever use pennzoil is if it was the last oil on earth. It is a parafin based oil and will sludge up your engine bad. The claim is they make it from natural gas, well one of the main components of natural gas is parafin. Parafin is wax which turns to sludge on engine parts. Found out the hard way years ago with my own vehicle. Y’all use it if you want to…. ✌️

    August 25, 2019
    Reply
  92. Far Reach Engineering said:

    Live Long and Prosper Engineering Explained.

    August 25, 2019
    Reply
  93. serge chelton said:

    the oil is under pressure that's what the pump does,these tests are not under pressure,oil is oil if the bearings are feed with oil the job is done,dont lsten to the marketing hype……………..

    August 26, 2019
    Reply
  94. Abdul muhaimin Abdullah said:

    Hi,are there any topics about hot/cold Spark plug? Appreciate it alot,love your explanation 👍👍👍

    August 29, 2019
    Reply
  95. No One said:

    Okay kermit the frog

    September 1, 2019
    Reply
  96. Tom Brabec said:

    Here is my question. I've heard of oil made up of 5 qts or even 10 qts. Let's say you had all the same viscosity 5W30, all fully synthetic. Each oil may contain certain additives vs others, so mixing could make sense. However, could this work? Your thought of the pros and cons.

    September 3, 2019
    Reply
  97. Faizan Shaikh said:

    I know many people have already talked about this, I just want to know that I live in a country where the temperature can be between 23 to 36 Celcius, now I have a Toyota Corolla 2nz fe VVTi 1.3 liter engine, it has run around 91,000km, will 20w50 multigrade oil be fine or should I switch to 10w30 or 10w40 fully synthetic oil, as I bought it used with no history of what previous owner used.

    September 5, 2019
    Reply
  98. wvadam said:

    Strictly from a viscosity point of view, the thicker oil should provide better protection for your engine, not worse as stated. If the oil had thinned out it would provide less protection. Granted there is other contamination and so on in used motor oil which will cause wear, but not the viscosity in this experiment.

    September 7, 2019
    Reply
  99. Philippine Boy Adventure Motorcycle vlog said:

    its very funny reading comments lol 😀

    September 11, 2019
    Reply
  100. 8 year old said:

    What winter have to do with oils?
    I use the same oil in summer😂😂
    Should be 5c-30.

    September 12, 2019
    Reply

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