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 • 4 063

  • Numer1Polak
    Numer1Polak  3 hours 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  4 hours back

      Could you please try some of the coolant leak products

      • Louis-Philippe St-Jean
        Louis-Philippe St-Jean  5 hours back

        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  8 hours back

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

          • juanito506
            juanito506  13 minutes back

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

        • bill bares
          bill bares  12 hours back

          Leaded gas is a higher octane than unleaded

        • William McDermott
          William McDermott  12 hours 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
            Adventures in mopeding  13 hours back

            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  17 hours 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  18 hours 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  23 hours back

            Great drone shots!

          • Texas Buzzard
            Texas Buzzard  1 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  1 days back

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

          • chauncey williams
            chauncey williams  1 days back

            Hope you didn't breathe that lead fuel exhaust

            • Project Farm
              Project Farm   17 hours back

              Thank you. I always wear a respirator

          • Cory Savage
            Cory Savage  1 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  1 days back

            Awesome video.

          • Warlordzero1
            Warlordzero1  1 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  2 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  2 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  2 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  2 days back

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

          • Element of Kindness
            Element of Kindness  2 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  2 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  2 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  2 days back

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

          • Kirin Sim
            Kirin Sim  2 days back

            Any video regarding fuel addictive test?

            • Project Farm
              Project Farm   2 days back

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

          • RedeemlessKills
            RedeemlessKills  2 days back

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

          • Richard Heinen
            Richard Heinen  2 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   2 days back

              Not yet. Thank you for the video idea!

          • Jor - D
            Jor - D  2 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  2 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  2 days back

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

            • Alex Wayman
              Alex Wayman  2 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  2 days back

                Project Farm think we can see that on the next video

              • Project Farm
                Project Farm   2 days back

                Thank you for the video idea!

            • Jared Copeland
              Jared Copeland  2 days back

              Awesome! I actually asked about this! Great video!

            • Ivor Abernethy
              Ivor Abernethy  2 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  2 days back

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

            • rickrazORR
              rickrazORR  2 days back

              Try 85% Absinth as fuel.

            • patrick craft
              patrick craft  2 days back

              Hey ProjectFarm. I cant find a way to send you a message. But i recently got a new vehicle, an 06, but still great condition. Id like to keep it looking its best and im wondering about best waxing products. Maybe you could do a video series of different waxes and tests to show the best product

            • The Dragon with the Girl Tattoo.

              For fuck sakes, lead is right in the title. No you fucking dummies lead anything is not good.

              • Pedro Perez
                Pedro Perez  2 days back

                Have you done a thread repair durability test?
                Read about people using JB weld to repair threads, loctite form a thread etc.

              • kyarakll4os7
                kyarakll4os7  2 days back

                Hello. Can you do a video on concrete anchor adhesive for threaded bolts?

              • PcItalian
                PcItalian  3 days back

                Would testing different stud finders be a potential video in the future? There are so many and I really just wanna save myself extra work by not going into plumbing and electrical

              • Caden James
                Caden James  3 days back

                I have 2 suggestions will a engine run on linseed oil and will drain opener clean a engine

              • Davis Claypool
                Davis Claypool  3 days back

                VP racing gas vs sunoco racing gas

              • Gabrielius Urbikas
                Gabrielius Urbikas  3 days back

                Try testing a wooden piston in a lawnmower

              • redneck 1137
                redneck 1137  3 days back

                Can you take a jar of gasoline and a jar of diesel and a jar of kerosene and put pieces of rusty metal in three of the jars and see what's one takes off rust faster or works better

              • Tony Cole
                Tony Cole  3 days back

                I ran a 1990 BMW 525i on avgas for 9 years before I sold it, i did turbo charge it in SA , it developed way more power, ran and idled a heap better the exhaust burned a lovely cream colour and it never missed a beat, no sensor or cat problems it was in SA car magazine and on testing extensively, blew the M5 off very satisfyingly , I would line up amongst Cessna aircraft and fill the tank with this excellent smelling green fuel, which average around 119 octane , leaded back then in Cape Town SA, the only difficulty was the fuel dispensed at a much higher rate,so filling was quick and messy, great days

                • Twobarpsi
                  Twobarpsi  3 days back

                  Led Zeppelins are better than unleaded ones...

                  • Jtto Bingodingo
                    Jtto Bingodingo  3 days back

                    Got 1 for ya.

                    ratchet straps
                    Lord knows some are better than others, strap seems to last, ratchet, not so much.
                    Cheers :) :) :)