Never Clean Your Car’s Engine

Engine bay detailing and cleaning. Never Clean Your Car’s Engine, DIY and car repair with Scotty Kilmer. How to clean an engine. How to wash your car's engine without damaging electronics or plastic parts. Engine cleaning explained. Why you should never pressure wash your car's engine. Why super cleaning your engine is not necessary. Car detailing. Car advice. DIY car repair with Scotty Kilmer, an auto mechanic for the last 51 years.
⬇️ Things used in this video:
1. Engine Degreaser:
2. UV Leak Dye (Don't use in AC system):
3. UV Glasses and light:
4. Cleaning brush:
5. Common Sense
Mechanic Monday Official Rules:
1. The Mechanic Monday Giveaway will begin April 22nd at 7 am CST and run for six days, ending on April 28th at 9 am CST.
2. There will be one winner of a few cans of engine degreaser valued at $30
3. To enter, simply leave one non-offensive comment in the video below.
4. Only one comment per entrant is allowed and more than one comment will not increase your odds of winning.
5. Must be 18 years or old at the time of entering this giveaway OR have your parents’ permission.
6. This giveaway is open worldwide.
7. Any offensive, obscene, or lewd comments will be ineligible to win the giveaway.
8. The odds of winning are based on how many people enter the giveaway.
9. The winner will be chosen at random.
10. The winner will receive a reply to their originally posted comment in the video and will also be announced in a newly posted comment by Scotty around Sunday 9 am CST. The winner will be required to respond to Scotty’s comment within 24 hours or their win will become void and a new winner will be chosen at random.
11. The winner will be required to give Scotty their full name and mailing address to receive the prize.
12. Entrants that use computers, programs, or any other means of cheating by adding additional comments through more than one account, will be ineligible to win the giveaway.
13. Standard mailing time from the win date and the date received, will depend on the winner’s geographic location.
14. This giveaway complies with all applicable federal, state, and local laws, rules, and regulations, including U.S. sanctions.
15. Entrants that do not comply with BR-channel’s Community Guidelines will be disqualified:
16. This giveaway is in no way sponsored, administered, or associated with BR-channel. Entrants are required to release BR-channel from any and all liability related to this giveaway.
17. Privacy notice: any and all personal data collected from the entrants and winner will only be used to announce the giveaway winner. The winner’s full name and address will only be used to mail the giveaway prize to the winner and nothing else. If you do not agree to these terms, then do not enter the giveaway.
⬇️Scotty’s Top DIY Tools:
1. Bluetooth Scan Tool:
2. Cheap Scan Tool:
3. Basic Mechanic Tool Set:
4. Professional Socket Set:
5. Ratcheting Wrench Set:
6. No Charging Required Car Jump Starter:
7. Battery Pack Car Jump Starter:
🛠Check out my Garage to see what I use every day and highly recommend:
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This is the people's automotive channel! Learn how to fix your car and how it works. Get a chance to show off your own car on Sundays. Or show off your own car mod on Wednesdays. Tool giveaways every Monday to help you with your own car projects. Or enter your own DIY car fix to compete in the best fix of the week contest every Thursday. We have a new video every day! I've been an auto mechanic for the past 50 years and I'm here to share my knowledge with you.
Here's our weekly video schedule:
Monday: Tool giveaway
Tuesday: Auto repair video
Wednesday: Viewers car mod show off
Thursday: The Best Fix of the Week Contest AND Live podcast, car question and answer
Friday: Auto repair video
Saturday: Second Live podcast, car question and answer
Sunday: Viewers car show off
Scotty Kilmer is a participant in the Amazon Influencer Program.


  1. Scotty Kilmer

    Scotty Kilmer

    28 dias atrás

    ⬇️ Things used in this video: 1. Engine Degreaser: 2. UV Leak Dye (Don't use in AC system): 3. UV Glasses and light: 4. Cleaning brush: 5. Common Sense ⬇️Scotty’s Top DIY Tools: 1. Bluetooth Scan Tool: 2. Cheap Scan Tool: 3. Basic Mechanic Tool Set: 4. Professional Socket Set: 5. Ratcheting Wrench Set: 6. No Charging Required Car Jump Starter: 7. Battery Pack Car Jump Starter: 🛠Check out the tools I use and highly recommend ► 🔥Scotty Shirts and Merch ► Subscribe and hit the notification bell! ► Scotty on Social: Facebook ► Instagram ► Twitter ►

    • felix joy

      felix joy

      18 dias atrás

      Scotty Thanks for sharing this inched been following your classes on my car for quite a while I have 4 cars and it works great you have good experience and I am glad to learn from you ...felix

    • Timber Wolf

      Timber Wolf

      22 dias atrás

      What would you recommend to do with a muddy engine on a 4wd?

    • Gundam 00

      Gundam 00

      22 dias atrás

      +phi No, you have to leave the engine running.

    • Sonya


      24 dias atrás

      Great advice. Thank you, sir.

    • Travis Jones

      Travis Jones

      25 dias atrás

      Where do I purchase the common sense?🤔

  2. Cesar Miranda

    Cesar Miranda

    9 horas atrás

    I totally agree with you!!! Nice video!!!

  3. Khaled Alharbi

    Khaled Alharbi

    19 horas atrás

    What about just using compressed air?

  4. Miguel Casas

    Miguel Casas

    20 horas atrás

    Me and my dad use to always was are engine but always covered the electric part's

  5. AH! Why is there poop in your mouth

    AH! Why is there poop in your mouth

    Dia atrás

    Rub Up Your Engines! 0:00 I would spray solvent on a rag and clean it that way.

  6. mehnlo


    Dia atrás

    How do cars or trucks go mudding through water without ruining alternator or getting hydro lock

  7. JollitownGameplays


    2 dias atrás

    I only clean the engine cover that has the V6 logo or 3.5 with the car logo with windex. That’s it.

  8. Joe Manansala

    Joe Manansala

    2 dias atrás

    Scott i can teach step by step in cleaning and detailing your engine in a safe and proper way.. whether it's air or water cooled engine, lol. Cheers!

  9. Modern Vintage Lifestyles

    Modern Vintage Lifestyles

    2 dias atrás

    Next video: Never clean the inside of your car. Just throw everything to the back seat when the front passenger seat gets filled with trash.

  10. Will Wong

    Will Wong

    2 dias atrás

    Before I knew it, my one-time mechanic poured a bucket of water under the hood of my '84 V6 Camry and, about a few months later, my car stalled while going at about 60 km/h. Couldn't start it ever again and had to scrap my beloved Camry after that.

  11. hardset2000


    2 dias atrás

    I don't recommend using a 3000 PSI pressure washer after using an engine cleaner/degreaser but washing it off with a garden hose and avoiding electrical parts, etc. is just common sense. Been doing this for over 40 years and no problems. Just can't stand a dirty, filthy engine compartment and feel better knowing I have it cleaned. (Runs better too)

  12. hardset2000


    2 dias atrás

    My comment to my potential car buyer. "I never clean my car engine's compartment" Potential buyer's thoughts. "It looks like a pigpen and not way I'm going to buy this POS!" Trust me, clean car inside and out sell better than dirty cars.

  13. Vito Lucci

    Vito Lucci

    2 dias atrás

    Ahahahahaha I remember my friend washed his engine and we had to push his car back to his house from the car wash 😂😂

  14. Austen McNeal

    Austen McNeal

    2 dias atrás

    I worked at a car wash for a couple months years back. My boss would power wash engines all the time. Without asking or even telling the customers. He just didn't like dirty engines!

  15. kostas focus

    kostas focus

    3 dias atrás

    have same toyota motor,very annoying to see the dirty,if you protect some parts with plastic membrane no problem,but i prefer to wash the engine only in summer

  16. Carlos Cera

    Carlos Cera

    3 dias atrás

    Scotty I love your videos!!

  17. Goon Squad Skateboarding

    Goon Squad Skateboarding

    3 dias atrás

    Don’t rev up your pressure cleaners

  18. isaac castillo

    isaac castillo

    3 dias atrás

    Never clean unless you get free cleaner from Scotty lol

  19. Basic Member

    Basic Member

    3 dias atrás

    Chrisfixit says otherwise

  20. REGULATOR 733


    3 dias atrás


  21. keith pearson

    keith pearson

    4 dias atrás

    My engine is spotless still runs great 😀😀😀

  22. jin5632


    4 dias atrás

    Pan the Organizer has left the chat

  23. Matthew Valentin

    Matthew Valentin

    4 dias atrás

    Hey Scotty big fan. Owning vehicles in NYC is a challenge to maintain but that degreaser would take car of detailing my 2010 spark metallic black er6n

  24. Frooty Tooty

    Frooty Tooty

    4 dias atrás

    Detailers gonna hate Scotty 😂

  25. Death Reaper

    Death Reaper

    4 dias atrás

    I've cleaned my engine once a year for the past 39 years, never had a problem

  26. David Nudell

    David Nudell

    5 dias atrás

    A clean engine will run just slightly cooler from the air heat transfer. The new cars are so good that I haven’t had a leak in 20 years.

  27. Chris Reed

    Chris Reed

    5 dias atrás

    I've owned 57 cars over the years and have cleaned each one many times with no trouble..With a clean engine I can see if I was to ever develop a leak and when I have to work on an engine, I can see where every bolt may be etc. I mainly do it for resale as a clean engine seems to just look more cared for than a dirty engine..dirty engine you just can't always tell what is a leak and what is old grease!! So I prefer a clean engine! Of course I do put a plastic bag over the alternator and know enough not to spray a harsh stream on any electrical areas as well as connectors..I think most newer cars are made to get some water on them from going through puddles anyway..It's the people that spray Tire Foam on an engine that have issues and the ones who use a high pressure wash on the engine...I use as little water as possible..

  28. Pierre Ranger

    Pierre Ranger

    6 dias atrás

    am sorry, but you are wrong. you should do a minimum of cleaning.

  29. John Mehaffey

    John Mehaffey

    6 dias atrás

    I was getting the cars underneath cleaned for its m.o.t it's a must for u.k cars and I asked the guy who owned the detailing shop did he power wash the engine and the answer was NO, he said with so many electrical components and with the e.c.u. it could really cause a lot of damage and even if I asked him to power wash it he always said no

  30. Dominic W

    Dominic W

    6 dias atrás

    Somebody wanted to spray water into my cars engine I was like hell no that’s so dumb! You’re gonna mess it up.

  31. Edgardo Camarillo

    Edgardo Camarillo

    7 dias atrás

    😂😂😂 unless you're planning on having a picnic😂😂

  32. claymonlimon


    7 dias atrás

    Maybe Scotty shouldn't use the words he used. If you know what you're doing, you can wash under the hood. I wouldn't let my mom or my son do it, but I understand what he means. Generally, most people don't need to wash under the hood.

  33. John Ramey

    John Ramey

    7 dias atrás

    I know so many people who use a power washer on the engine compartment. = /

  34. Omega Beta

    Omega Beta

    8 dias atrás

    That fan is scary wow.

  35. r 7470

    r 7470

    8 dias atrás

    Did he not say in an earlier video to use WD-40 for water in electronics

  36. Fabian flores

    Fabian flores

    8 dias atrás

    Cleaning your engine helps it run cooler.

  37. Critter87


    8 dias atrás

    My grandpa taught me this years ago. Only clean an engine when you’re trying to find leaks.

  38. Mikey Tha Fsh

    Mikey Tha Fsh

    8 dias atrás

    Cleanliness is next to Clamidiya. Look it up.

  39. bradley benson

    bradley benson

    8 dias atrás

    Love your vids

  40. JD Spears

    JD Spears

    9 dias atrás

    Iv yet to own a truc thats scared of water. In fact, here in the deep south a truc that caint go through 3ft of water is just a bath tub. I dont chrome my stuff up just to let it get covered in funk. That said, yes most engines are heat dispersed threw radiator but 2 inches of mud on the oil pan does zero good along with brakes, steering assy etc. I agree soaking engine and elec components with pressure is far worse than letting it be filthy but sometimes a little common sence comes into play when doing so...

  41. Armando Rodriguez

    Armando Rodriguez

    9 dias atrás

    Scotty, will you ever upload video bloopers? I'm sure have many funny moments. Thanks! Big fan and have learned lots from you.

  42. Tito B

    Tito B

    9 dias atrás


  43. Sanel Šabanovič

    Sanel Šabanovič

    10 dias atrás

    Well it's not that bad. Don't use water power hoses. Normal hoes with normal wather presure will do nothing. Cars are design to work in heawy rain. So when you drive 50 miles per hower and ther is heawy rain nothing will happen to engine. But is nice to take for a long ride after wash.

  44. Aldo Moreno

    Aldo Moreno

    10 dias atrás

    SCOTTY I use synthetic oil on my 04 Tacoma what do you think.

  45. rANDOMdUDe


    11 dias atrás

    You must not have met cereal marshmallows....😁

  46. Windmill Hill

    Windmill Hill

    11 dias atrás

    Man, that new 4K camera really makes a difference!

  47. V Tramell

    V Tramell

    11 dias atrás

    I cannot agree with this one. In addition to making it easier to find leaks, a clean engine can save on potential repairs resulting from accelerated wear due to oil and grease getting on rubber hoses and plastic parts. There is also a safety factor. I have seen engines catch on fire because oil or transmission fluid had leaked onto the exhaust manifold. Also a clean engine helps with resale/trade-in value.

    • Damon Richter

      Damon Richter

      8 dias atrás

      Oil and Greece doesn't hurt rubber hoses dude, brake lines have rubber lines and my oil intercooler is rubber

  48. Robert Bronder

    Robert Bronder

    11 dias atrás

    Scotty always to the rescue.

  49. Michael Tobat

    Michael Tobat

    11 dias atrás

    Well well now you know

  50. praveer vikram

    praveer vikram

    12 dias atrás

    I ve cleaned my engine bay with Collin spray in a yr or two. Worked out good.

  51. mesamike85


    12 dias atrás

    Clean comment here. No prize needed though, car is new. Sorry, Scotty... I bough GM! GM for 18 years and not a single issue. Safe motoring!

  52. Da Hy

    Da Hy

    12 dias atrás

    Some Auto's Radio's Will lock out when the battery is radio...there goes $50.00 to re-code the radio...unless you have the radio careful...and parking your auto over the winter keep the battery from going dead cause the radio would lockout you...from the love...

    • Jack Burton

      Jack Burton

      9 dias atrás

      I found a web site that gave me some codes for my 2010 civic in such a situation. Have it written down now. Google is your friend.

  53. saleem Ahmad

    saleem Ahmad

    12 dias atrás

    Scotty is right had a friend washed his BMW engine after a day later he needed a $ 3500 computer for the whole car

  54. Allen Hampshire

    Allen Hampshire

    13 dias atrás

    Hi Scotty, what a coincidence that this video should pop up . My son's Ford F150 has a dirty engine from living in the Deep country , running on dirt roads. It runs great, but dirty. Nothing leaking. I was hesitant about spraying the engine , because of the electronics. Seeing your video ....I am going to pass...I afraid I will damage something. God Bless, keith

  55. Marcus Viscarra

    Marcus Viscarra

    13 dias atrás

    Oil and grease breaks down any rubber in the engine bay, you have to clean the engine. If your engine bay has alot of grease and oil from leaks it can and will catch on fire there buddy. I have seen it plenty of times. Lately I have not been agreeing with you scotty. You have been saying alot of incorrect information lately like hondas VTEC system.

  56. Awais Iqbal

    Awais Iqbal

    13 dias atrás

    I get my car engine cleaned with gasoline detergent mixture and get it washed with jet wash. Try to avoid extra water inside and spray shorts bursts of jet

  57. LoveThe PdMods50

    LoveThe PdMods50

    13 dias atrás

    I have to wash mine...sorry

  58. Cuong Hoang

    Cuong Hoang

    13 dias atrás

    Is awesome lesion

  59. Michael Wayne

    Michael Wayne

    13 dias atrás

    Other engine cleaning videos claim to clean a warm engine. I’ve been told by a mechanic to clean my engine with it running. So many different ways. But yours makes the most sense. Thanks Scotty!

  60. Balzinurgob01


    13 dias atrás

    I used a compressed air-powered siphon wand with a strong degreaser solution and it messed up my throttle position sensor and now the engine idles like it's going 60 down the turnpike; Scotty's right--use caution around the electronics with harsh cleaners

  61. Jor Jsen

    Jor Jsen

    13 dias atrás

    Before when I always had old car I wash the engine, but I cover the electric with plastic and it works good. I like too see a clean motor and is danger have too much oil around the motor can start fire. Today when the engine and cars have been much better we don't see them so dirty.

  62. Milinda Abeysinghe

    Milinda Abeysinghe

    13 dias atrás

    Our cool guy has made another episode..💓💓💓

  63. Korey Mayo

    Korey Mayo

    13 dias atrás

    I've never had an issue after cleaning several different engine bays, but thanks for reminding me I need to do that because it's been a while!

  64. John Beasley

    John Beasley

    13 dias atrás

    50% of all engine wear is from dirt particles getting into the engine through the fuel, air, and oil. So if you want to destroy your engine faster don't clean your engine. My engines look about like new at 150,000 miles. Scotty is out to lunch. He is a pig.

  65. Peter Garner

    Peter Garner

    13 dias atrás

    I have always cleaned the engine and engine bay. If you know what you're doing then there's no problem. I clean it once a year as I find it enough. I use a cleaning rag on on the engine bay about every 2 or 3 weeks just to keep the bay clean, dust and pollen. I know anul but its me.

  66. Ketz


    13 dias atrás

    This is a clean and unoffensive comment.


    13 dias atrás

    The type of people who clean their engine bays regularly are the type of people who wash their car every week without waxing it, then wonder why their paint looks so dull all the time! 😆

  68. Muhan C.A.

    Muhan C.A.

    13 dias atrás

    Thanks Scotty!

  69. Melissa Bahm

    Melissa Bahm

    14 dias atrás

    This is why your Celica died...

  70. alex tinoco

    alex tinoco

    14 dias atrás

    Hello Scotty, can a head gasket leak cause the engine to hydro lock the engine?

    • Korey Mayo

      Korey Mayo

      13 dias atrás

      Most definetly! That's why head gasket leaks have to be fixed right away!

  71. Sebastian Lash Ayapana

    Sebastian Lash Ayapana

    14 dias atrás


  72. ruffnred E

    ruffnred E

    14 dias atrás

    I was just thinking should I clean my engine thanks for the info Scotty K

  73. Jean Chinette Raymond

    Jean Chinette Raymond

    14 dias atrás

    i have always kept my engine cleaned and never had a problem i like to keep my cars looking new

    • WorldGangWatch


      11 dias atrás

      Jean Chinette Raymond with a pressure washer?

  74. Barry Sadesky

    Barry Sadesky

    14 dias atrás

    Im not saying he’s wrong; but at a detail shop I worked at for awhile we were taught to keep the vehicle running, suds up everything , rub down everything , and power wash off everything (except hood blanket). We had more issues starting cars back up that we had turned off to wash, we only ever had issues with a couple that we left running In both cases once you let it dry for 30-60 min they’re usually fine If possible let it dry before attempting to start it back up

  75. Rustie Shackelford

    Rustie Shackelford

    14 dias atrás

    As a former car detailer we always cleaned engine bays. Only exception was vw’s way to many sensors on those engines. If you own a vw never put water on the motor.

  76. Christophe Valiant

    Christophe Valiant

    14 dias atrás

    Thank you Scotty Kilmer 😗😗

  77. Dracarys


    14 dias atrás

    Thatś bullshit...I used to cover the battery and the main electronic components with plastic bags and clean the motor regularly and NEVER got an issue.

  78. Hashim Jamal

    Hashim Jamal

    14 dias atrás

    Nicely taught!

  79. harold vonhelms

    harold vonhelms

    14 dias atrás

    thank you

  80. Juan Matos

    Juan Matos

    14 dias atrás

    Scott! My father is fixing his motor. It's a Mitsubishi Signo 2011 1.3. 150.000 km and he has never cleaned it, now I see the opportunity to do so, the motor is not currently under the hood. Should we clean it or leave it like that? I thought maybe the risk is reduced, after rinsing it won't be turn on after everything finished

  81. Wilhelm Hesse

    Wilhelm Hesse

    14 dias atrás

    "You don't live under here"😂😂😂

  82. 5 Saber

    5 Saber

    14 dias atrás

    It’s not stupid to clean your engine. I clean my engine all time with no problems.

  83. John Avila

    John Avila

    15 dias atrás

    I’ve never had issues with modern cars, maybe in the 70s or 80s

  84. Zafar Sultana

    Zafar Sultana

    15 dias atrás

    Thank you useful information

  85. crazy train

    crazy train

    15 dias atrás

    What do you think used cars places do, before they sell them? I much rather my engine bay be clean.

  86. zudemaster


    15 dias atrás

    Two months from now Scottys video will be how to clean your car engine.

  87. georgianborat


    15 dias atrás

    Scotty be like don't wash your engine.. and washes it :)

  88. georgianborat


    15 dias atrás

    Ozzy Killer :)

  89. Anthony Dempsey

    Anthony Dempsey

    15 dias atrás

    A little careful engine cleaning is a part of maintenance.

  90. Anthony Dempsey

    Anthony Dempsey

    15 dias atrás

    Don't clean your face either!

  91. Junior Sarpong

    Junior Sarpong

    15 dias atrás

    I was thinking of cleaning my cars engine but “hey you don’t live here!”

  92. Robert Owens

    Robert Owens

    15 dias atrás

    Clean, non-offensive comment.

  93. Roger Anglin

    Roger Anglin

    15 dias atrás

    A lot of the products do say to use on a warm engine, however, I trust Scotty over them.

    • stevenhs8821


      13 dias atrás

      Warm is different than hot.

  94. Osama Razzaq

    Osama Razzaq

    15 dias atrás

    Thank you for the informations.

  95. timeless laughs

    timeless laughs

    15 dias atrás

    How strong is this degreaser Scotty?

  96. Roger Parker

    Roger Parker

    16 dias atrás

    Scotty - clean that cable end please.

  97. ILikeWafflz


    16 dias atrás

    Just the excuse I needed! I never liked cleaning my engine bay... the awkwardness of getting around everything and the constant "am I getting something wet that I'm not supposed to" has always made it a task I have little interest in

  98. Ralph Petronella

    Ralph Petronella

    16 dias atrás

    This is a clean non offensive comment

  99. Fazal Shah

    Fazal Shah

    16 dias atrás

    Nice video

  100. THECHARLIE1900


    16 dias atrás

    Good job Scotty

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