Is Leaded Fuel better than Unleaded? Let's find out!

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  • Published: 12 August 2019
  • Is leaded fuel better as than unleaded gasoline? 100 octane low lead aviation fuel (100LL avgas) is tested in several engines: Wankel rotary, see through piston engine, fuel injected generator, small engine for lead build up, and Predator 212 for top speed performance. A special thanks to Matt from the Warped Perception YouTube channel for loaning his rotary engine to me! Please check out his channel. His videos are absolutely amazing!!! Also, thanks to all the viewers that requested this video. Thank you very much for supporting the channel by watching the commercials and through Patreon support. https://www.patreon.com/projectfarm

    This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Project Farm LLC
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Comments • 4 095

  • Michael Stewart
    Michael Stewart  10 minutes back

    Even as an general aviation A&P leaded fuels are pointless and largely result in wasted time cleaning spark plugs for pilots who don’t understand peak richness.

    • Nails Wood
      Nails Wood  45 minutes back

      Looking at that aviation SDS and I wonder of which cancers you are at higher risk?

      • Carl W.
        Carl W.  2 hours back

        I would like to see you test the claim that Marvel Mystery oil added to gas increases engine life by improved lubricity of piston rings in cylinders. MMO should reduce friction. Use your bearing test fixture with gasoline and MMO at the recommended level.

      • ToughAncientSpark
        ToughAncientSpark  4 hours back

        Didn't you do this before?

        • Project Farm
          Project Farm   54 minutes back

          Thank you. I tested Jet Fuel, but not Avgas.

      • Steffen Dhonau
        Steffen Dhonau  5 hours back

        Could you try run an engine on ed's red? It's for gun cleaning mixture of ATF kerosene terpentine and acetone.

      • Redston_1
        Redston_1  22 hours back

        Kitchen and skin oils vs 10w-30. Like vegetable, olive, coconut, etc.

      • ww3sabiture
        ww3sabiture  1 days back

        i can for a fact say 100LL is better then most fuels found at a gas station due to the fact it has almost no water its also got no ethenal and stays good much longer. we winterize everything with the stuff and it never fails to start next spring

      • ziaride
        ziaride  1 days back

        I wouldn't say leaded fuel is better but not running it in engines that were designed for it can be a problem. Valve seat recession on 70's and 80's BMWs from running unleaded for example is a well known issue that can only be solved by expensive procedure of replacing valve seats.

      • Mike Chrysler
        Mike Chrysler  1 days back

        Great video as always. Keep them coming.

      • Shanna H
        Shanna H  2 days back

        Step 1. Go to Google
        Step 2. Search this keyword: 123moviesdaily
        Step 3. Enjoy!
        Is Leaded Fuel better than Unleaded? Let's find out!
        It makes me wonder if that was the intention for man, to chase sticks and ducks, to name animals, to create families, and to keep looking back at God to feed off his pleasure at our pleasure.
        My father will hunt you for taking his power if he finds out,” he said into the frigid dark. “And kill you for learning how to wield it.” “He can get in line,” was all I said.
        They say you came back different. Came back wrong.” A crow’s laugh. “I never bother to tell them I think you came back right.

        • Pnoid News
          Pnoid News  2 days back

          So after watching I wanna say I love your channel first. Second, you gotta force more air in with higher octane. And let it breath out better. The exhaust will act as a choke on the back side building up just enough pressure to limit gains.

        • 600bubba
          600bubba  2 days back

          I run 100ll in my 2stroke motorized bike but wonder if you can see what a stock 2 stroke engine kit would do on nitrous

          • 600bubba
            600bubba  8 hours back

            Project Farm zedamotorsports.com makes the best engine kits imo on my red bike I have his super stock r race engine it easily will do 50+mph

          • Project Farm
            Project Farm   2 days back

            Thank you!

        • jozsab1
          jozsab1  2 days back

          Could you do a test what is the effect of oxigen enriched air intake ? Maybe pure oxigen ? Would the efficiency go up ? Would the engine be stronger ? How much more would it cost to mix air intake with oxigen ?

        • Numer1Polak
          Numer1Polak  2 days back

          I run it in my yz250 2 stroke dirtbike as a cheap alternative to racegas, as so do a lot of people that dont wanna run expensive racegas in their old beater bikes.

        • Joshua Hale
          Joshua Hale  2 days back

          Could you please try some of the coolant leak products

        • Louis-Philippe St-Jean

          Some people with modern diesel engines (common rail) put 2 stroke oil or atf in a 200:1 ratio on their tank because ultra low sulfur fuel is supposedly lacking of lubricity for the pump and injectors. It would be interesting to see on the lubricity tester how normal diesel and diesel with different lubricants or additives makes difference or not. Thank you!

        • Felthry
          Felthry  2 days back

          I'm surprised you can still even get leaded gasoline.

          • juanito506
            juanito506  2 days back

            That's only for GA reciprocating piston aircraft (Piper, Cessna, Beechcraft, etc.)

        • bill bares
          bill bares  2 days back

          Leaded gas is a higher octane than unleaded

        • William McDermott
          William McDermott  2 days back

          You should do a fuel comparison between "top tier" fuels to see which one is the best, most cost effective, cleanest, ect..

          • Adventures in mopeding

            Have you ever heard of the fuel stable called PRI-G you could do a video comparing different fuel stabilization products. That one also claims to restore fuel. You could also test that. Keep the good videos coming.

          • R1 Powersports
            R1 Powersports  3 days back

            Project idea: I saw a video where waste plastic was turned back into oil by heating/melting the plastic and venting the exhaust through a water bath. Wonder if you could use this oil as fuel? Great videos! Keep it up!

          • Kim Bergeron
            Kim Bergeron  3 days back

            YOur videos keep getting better and better.
            This shows that 100LL has a LOT more lead than lead-free (I know this SHOULD be obvious, but talk to the average person)

            I especially like how when you give a piece of data you give the before also (REALLY LIKE THIS!).
            Once again, thanks.

          • James Kelly
            James Kelly  3 days back

            Great drone shots!

          • Texas Buzzard
            Texas Buzzard  3 days back

            Super cool video and clips. I’ve been running avgas in my small engines for the last 8 yrs, so I was really interested in the results. I feel like this video needed a conclusion... after watching I don’t know.. that was a lot of lead build up

          • 8hour
            8hour  3 days back

            Great, cheap and very stable for high compression drag racing engines!!!

          • chauncey williams
            chauncey williams  3 days back

            Hope you didn't breathe that lead fuel exhaust

          • Cory Savage
            Cory Savage  3 days back

            I just want to say great work on the video. I hope that you had a lo of fun making the video. I never heard of this type a fuel before. I would like to see you try testing table saw blades to see if brands makes a difference or not. As always I am looking forward to the new video that is coming out on Monday again. I would just like to say one last thing take care in' till next time!

          • Jay Aldridge
            Jay Aldridge  3 days back

            Awesome video.

          • Warlordzero1
            Warlordzero1  3 days back

            What we do not realize is the amount of ENERGY in the see through cylinder head quite amazing thank you for your hard work.

          • Ntrain1919
            Ntrain1919  3 days back

            Can you test Redline fuel system cleaner? Maybe compare it to ones you already have tested like Marvel and Seafoam?

          • Justin Wallace
            Justin Wallace  3 days back

            The lead is not good for the 4 stroke engines. Todays 100LL contains far more lead than car gas ever did. About 4X as much. I run it in my two strokes, and generator due to the long storage life. Rated at 5 years for aviation use, shelf-life is more like 10 years.

          • Greg Huth
            Greg Huth  3 days back

            #Suggestion - I had a guy tell me that the often used starting fluid is dangerous: "A fire hazard." He suggested using WD40, saying it was every bit as good. I am interested. Thanks.

          • Tony Ray
            Tony Ray  3 days back

            Good time to say "Get the lead out " !!!!

          • Element of Kindness
            Element of Kindness  3 days back

            Your expertise is needed! Duracell is claiming their new Optimum alkaline batteries have "more life in some devices, and more power in others." (always followed by an asterisk with no defining data, other than to say "compared to regular copper top batteries.)

            It sounds like BS to me, and needs to be tested whether there is more watt-hours of energy at a given current, AND if a higher current can be drawn at a given voltage.

          • Mr Fix It Mercedes Benz

            If you don't mind. I would like to say. then lead in gasoline main purpose is to coat the exhaust seat so the the valves don't wipe out the seat, Second unleaded fuel is only used on engines that have hardened valve seats , Testing of gasoline is done on the RON / MON Single cylinder adjustable compression engines , hence at the pump you will see. R+M/2. this means RON samples plus MON samples divides by 2 gives you a octane number . Most gasoline engines can run on 66 octane but under load will knock . just some FYI. info on unleaded & leaded gasoline

          • Sara Llewellyn
            Sara Llewellyn  4 days back

            I was curious: Trimmer cord is very specific in its diameter: .065,.080, .095, .105 etc.


            There's something else out there that you can get in those exact diameters: Piano wire, which is extraordinarily strong, durable, and flexible.
            ( https://en.wikipedia.org/wiki/Piano_wire ) The tensile strength of one popular brand of piano wire is listed as 2620–2930 MPa. By comparison, the tensile strength of a human bone is only 130. Wouldn't recommend exposing your fingers to this while it's on a trimmer.


            I was wondering if it would be better (or possible) to use piano wire for trimming?

          • Sfer Tonoc
            Sfer Tonoc  4 days back

            A video on various oil weights going through a coffee filter or a sieve at different temps would be interesting to see if those 0w 5w oils are really necessary for the new cars or if 10w would be fine with it

          • Edward Teach
            Edward Teach  4 days back

            Blackbeard would like to see a spark plug comparison video if that’s possible

          • Kirin Sim
            Kirin Sim  4 days back

            Any video regarding fuel addictive test?

            • Project Farm
              Project Farm   4 days back

              I have tested Techron, Seafoam, Marvel Mystery Oil, and Amsoil PI.

          • RedeemlessKills
            RedeemlessKills  4 days back

            Thanks for making these awesomely weird videos! Keep up the amazing work!

          • Richard Heinen
            Richard Heinen  4 days back

            Has nothing to do with this subject, but if you haven’t already done this, can you test 15w40 oils? I’d really like to see shell rotella and cenpeco in the line up. Thanks for all you do!!!

            • Project Farm
              Project Farm   4 days back

              Not yet. Thank you for the video idea!

          • Jor - D
            Jor - D  4 days back

            Video idea maybe. Which gas station has the best top tier gas?
            BP, Chevron, Conoco, Costco, Exxon, Holiday, Kwik Trip, Mobil, Shell, Sinclair, Texaco.
            I wonder if b.p really does have the best gas to use with their "invigorate" or if they all aren't noticeably different.

            I do know If a fuel company can prove that their gas has additives and detergents that keep residue from building up on valves or in the combustion chamber, then they are qualified to call themselves a "top-tier" gasoline supplier. And for some reason ford recommends B.P.

          • Mike Mason
            Mike Mason  4 days back

            Can i come work for you? 😀
            I can stay in my RV.
            1986 Allegro Bay that I've kept well maintained. (You may not experiment on it )

            • John Smith
              John Smith  4 days back

              Idea what’s better steel toed shoes/boots or composite toe?

            • Alex Wayman
              Alex Wayman  4 days back

              Use two cycle fuel With no oil in the motor and see if it will lubricate this on the wall

              • Alex Wayman
                Alex Wayman  4 days back

                Project Farm think we can see that on the next video

              • Project Farm
                Project Farm   4 days back

                Thank you for the video idea!

            • Jared Copeland
              Jared Copeland  4 days back

              Awesome! I actually asked about this! Great video!

            • Ivor Abernethy
              Ivor Abernethy  4 days back

              I love the channel, just a bit bummed we dont have the selection you guys have have compared to N Ireland! Would consider testing the claims of glues, like gorilla, or their ability to adhere underwater?

            • Andrew Carter
              Andrew Carter  4 days back

              Can you test to see if vegetable oil can be used as hydraulic fluid