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


Comments • 4 116

  • Krankie V
    Krankie V  4 hours back

    In small engines the only reasonable performance increases you should expect are due to better energy density of the fuel due to having no ethanol content. It's not so much about the lead or even the octane rating. I use 100LL in higher performance and higher compression engines where higher octane is needed. Never in EFI engines with o2 sensors because the lead fouls the sensors over time. It also fouls catalytic converters. I also use it in engines which don't get used as often because it is more stable than e10 gas. Again in this case it isn't about the lead or the octane but the stability that matters to me.

    It's also worth noting that in my research on this fuel, that I've read that even though they call it "low lead" due to a reduction in lead content over previous aviation fuels, it still has more lead content than road fuel has ever had. In my old truck I mix it with 91 octane ethanol free fuel to reduce the lead content to avoid buildup. It works great that way.

    • The heart of ford
      The heart of ford  7 hours back

      How about testing ratchets to see witch brand can take the most abuse

      • FLA Son
        FLA Son  21 hours back

        I was wondering if AP fuel is really better than pump gas .

        • Shea Sollars
          Shea Sollars  24 hours back

          Hey great video, but if you're going to mention a video, can you please reference it in description? Annotations don't work here.

        • NoNonsenseKnowHow
          NoNonsenseKnowHow  24 hours back

          How about a video to compare 5 or 10 year aged gasoline with fresh gasoline? (Maybe test flash point and some flame comparison with that clear cylinder head) Ive have gasoline sit for 5+ years and used it without any issues. Anyway great vid and I just added you to the "suggested channels" section on my YT channel. Keep up the awesome work bringing us pure results.

        • Remington Bradley
          Remington Bradley  2 days back

          Can we see what happens when gasoline is run in a diesel engine/vise versa

        • Dpigskin10
          Dpigskin10  2 days back

          What about a permanent marker competition. Sharpie, Milwaukee inkzall, cheaper brands. Tests of permanence, hot/cold, dirty surface, and amount of ink per pen.

        • Michael Stewart
          Michael Stewart  2 days 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  2 days back

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

          • Project Farm
            Project Farm   1 days back

            Thank you. The SDS for hand sanitizer is even worse!

        • Carl W.
          Carl W.  2 days 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  2 days back

          Didn't you do this before?

          • Project Farm
            Project Farm   2 days back

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

        • Steffen Dhonau
          Steffen Dhonau  2 days 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  3 days back

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

        • ww3sabiture
          ww3sabiture  3 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  3 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  3 days back

          Great video as always. Keep them coming.

        • Shanna H
          Shanna H  4 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  4 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  4 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  2 days back

              Project Farm 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   3 days back

              Thank you!

          • jozsab1
            jozsab1  4 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  4 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  4 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  4 days back

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

            • juanito506
              juanito506  4 days back

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

          • bill bares
            bill bares  4 days back

            Leaded gas is a higher octane than unleaded

          • William McDermott
            William McDermott  4 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  4 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  4 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  5 days back

              Great drone shots!

            • Texas Buzzard
              Texas Buzzard  5 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  5 days back

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

            • chauncey williams
              chauncey williams  5 days back

              Hope you didn't breathe that lead fuel exhaust

            • Cory Savage
              Cory Savage  5 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  5 days back

              Awesome video.

            • Warlordzero1
              Warlordzero1  5 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  5 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  5 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  5 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  5 days back

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

            • Element of Kindness
              Element of Kindness  5 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  6 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.
              ( ) 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  6 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  6 days back

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

            • Kirin Sim
              Kirin Sim  6 days back

              Any video regarding fuel addictive test?

              • Project Farm
                Project Farm   5 days back

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

            • RedeemlessKills
              RedeemlessKills  6 days back

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

            • Richard Heinen
              Richard Heinen  6 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   5 days back

                Not yet. Thank you for the video idea!