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 • 4 819

  • skandigraun
    skandigraun  3 days back

    Sooooo... is it better? Or what?

    • Frimmbits
      Frimmbits  5 days back

      Have not seen the video yet but I have to comment.
      Lead was taken out of gasoline because of it's adverse health effects on children and the vulnerable. Actually lead has very good antiknock property by "denseing" the fuel.

    • Rafael Teixeira
      Rafael Teixeira  5 days back

      avigas on a diesel engine

    • Wendell Greenidge
      Wendell Greenidge  6 days back

      But also keep in mind the point of leaded fuel is to raise the octane level and you need to actual tune and add timing or force induction to actually benefit from the added octane to resist engine knock

    • Wendell Greenidge
      Wendell Greenidge  6 days back

      You must have a lot of free time to do these videos lol

    • Trevor Janes
      Trevor Janes  6 days back

      Dude I don't know how you ain't rich already. You're testing has led to some really conclusive evidence on a lot of topics on oil and fuel. I say time for you to cash in on your knowledge. And thank you for giving me some ideas of my own.

      • Project Farm
        Project Farm   6 days back

        Thank you very much! I love my simple life and make enough to be content. Thanks again

    • Mr awesome
      Mr awesome  7 days back

      Great video can you make your engine run on hydrogen I bet you could

    • Holden FFA
      Holden FFA  7 days back

      When you did the 400 watt load you put a fan and 2 heaters are you hot or cold

      • Joe K
        Joe K  1 weeks back

        These tests you're doing are you relevant. spark plugs were made differently for lead gasoline versus the non-lead gasoline in the current spark plugs we have today. This whole thing is invalid

        • ChessMasterNate
          ChessMasterNate  1 weeks back

          Dude this lead stuff is very bad. Even small amounts raise your blood pressure, which then damages your kidneys, then you die early. It can also cause heart disease: "Using these data, the team calculated that blood lead levels higher than 1 μg/dL are responsible for around 412,000 deaths in the U.S. each year. Of these, around 256,000 are from CVD." https://www.medicalnewstoday.com/articles/321203.php#4
          We are blaming drug overdoses for the reductions in life expectancy, but it is not that simple.

          There is permanent damage to self control and IQ it causes when exposed before birth or as an infant. This is what caused the elevated crime form the 1960's into the late 1990's. They can see this damage on MRI. https://www.motherjones.com/environment/2016/02/lead-exposure-gasoline-crime-increase-children-health/
          As this early lead exposure damages self control, it also greatly increases addiction and drug overdoses. If you look at the ages of the overdoses, you will see a lot of people who are not young. People born when lead exposure was at its height.

          They were all set to get rid of this crap in avgas in 2016, but Trump...
          They already formulated and fully tested new fuels. Some even gave more range. Now it will cost more when the change is made, because all these companies have the refineries sitting idle for 2-3 years that were supposed to make this.

          I also believe the reason we were spinning our wheels in the 1980's and 1990's on lots of tech including the Space Shuttle was that the brightest of the bright just did not exist in the US unless they were imported because everyone had been exposed to lead. Virtually no new US born chess grandmasters for quite some time. After leaded car fuel was banned children began to be born without the damage. Now we are making Grand Masters almost every year, and there are 4 American chess players in the top 20 in the world including the #2 spot. 5 Russians. The Russians never used the lead additive. They knew it was poison. There was a gap where lead went up again because of increases in smelting. Gladly that is now behind us. Sort of. Some could be coming from just across the boarder in Mexico where they moved all the smelting. And I mean just across the boarder. It is expensive to ship car batteries, so the recycling is as close as they can get. The right solution is to ban the sale of new/replacement lead acid starter batteries (over 70% of lead smelting is for starter batteries). Lithium can replace these and last 3+ times as long for roughly 3x the price. Actually, likely to save you money, as there are often other costs beyond just the battery replacement...like towing. And sometimes you damage your alternator as the battery slowly dies...and it has to work harder.

        • Craig Johnson
          Craig Johnson  1 weeks back

          You can make more power with aviation gas by increasing compression ratio and advancing ignition timing.

        • zool201975
          zool201975  1 weeks back

          wait you can still get leaded fuel in the US? that is insane!!!!

          • zool201975
            zool201975  1 weeks back

            @Project Farm You are welcome i guess.
            I hope you do not think this is a remark of your channel. i only started watching recently and so far you do a good work it is an enjoyable channel i like the actual scientific approach to things you do.
            Just the fact that leaded is still available anywhere baffles me.
            It is one of the few substances that in any amount is toxic. especially for developing brains of kids.
            it.. tends to turn unfortunate people who have been exposed to it as children as slight sociopaths with violent tendencies at worst and in the best scenario only scratches 10-50 points of their potential IQ.
            And this is in less then micrograms. Not sure how to convert this to any imperial measurement but take it from me lead in any amount in the air is really really bad.
            It is one of the reasons crime has gone down world wide decades after it being abolished world wide along socio-economic reasons of course...
            but apparently it i not completely banned in the US. i also know the US still allows new pipes for fluids in homes to be made out of lead in some states. and even lead paint (lead oxide for the very white colour).
            Just keep it far away from your kids / grand kids.

          • Project Farm
            Project Farm   1 weeks back

            Thank you for the feedback

        • друг
          друг  2 weeks back

          wow that probably the first time I've ever seen a rotary engine work in real life

        • Guy Fawkes
          Guy Fawkes  2 weeks back

          Leaded tastes much better.

          • 37kgb02
            37kgb02  2 weeks back

            The main reason for Addding lead into full was to publicatie the valves and to prevent nocking.
            Nowerdays the full and the internal combustion engines are a lot better and is the very toxic no more needed.

            • ChessMasterNate
              ChessMasterNate  1 weeks back

              The valve stuff was a myth presented by the companies making money from the additive. It made lower octane gas behave like higher octane. They could just make the fuel higher octane by doing more cracking and such but they save a few cents putting in this crap instead. Multiplied by millions and millions of gallons, it made them a lot of money while thousands of tons of lead were thrown into the air and settled on the soil everywhere tainting our food and lots of things.

              People are just stupid in the US, when there is money to be made.

            • Project Farm
              Project Farm   2 weeks back

              Thank you for the feedback

          • Chris Price
            Chris Price  2 weeks back

            Do higher octane fuels damage small engines?

          • Clyde Calamity
            Clyde Calamity  2 weeks back

            Both are great. Burned down each of my ex girlfriends’ houses with ease. Big stamp of approval. 🤘🏻

            • Daevyd Jae
              Daevyd Jae  2 weeks back

              Thomas Midgley is infamous in the scientific community because of crappy inventions like lead in gasoline and CFC's. Kids were having high levels of lead in their systems, and there is a link between high lead content and violent behavior.
              To cap off his life, he became disabled with polio, and it was hard to even get out of bed. He invented a complicated pulley system to lift him from his bed. However this plan backfired and he got caught up in the ropes and strangled himself.
              Both tragic and hysterical.

            • Thomas Neal
              Thomas Neal  2 weeks back

              Man I wish I had that much land

            • Power Surge
              Power Surge  2 weeks back

              He must buy his head gaskets by the case

            • INTO_IT_ALL_ HOBBY_ enthusiast

              You should try to run a engine on nitro rc car fuel !

            • mark marcinik
              mark marcinik  2 weeks back

              I hope you had ear protection for the wankel test. It’s has got to be the loudest and most horrible sound ever.

              • Kevin Danger Powers
                Kevin Danger Powers  2 weeks back

                Another great video! You're really getting good with all the camera work. keep the videos coming!

              • N Gauge England -Synthematix-

                Thanks, now i want a petrol go-kart! that thing looks like a hell of a lot of fun.

              • HolaSoyAlejandro
                HolaSoyAlejandro  3 weeks back

                wtf is leashed fuel

                • Diego Pacheco
                  Diego Pacheco  3 weeks back

                  Diesel vs leaded fuel vs unleaded fuel

                  • Diego Pacheco
                    Diego Pacheco  2 weeks back

                    Project Farm bro I love your vids keep up the great work


                    And that lawnmower has been there a lot and I’m suprised it’s still alive 😂

                  • Diego Pacheco
                    Diego Pacheco  2 weeks back

                    Yay 😃

                  • Project Farm
                    Project Farm   3 weeks back

                    Thank you for the video idea!

                • flyinwalenda
                  flyinwalenda  3 weeks back

                  I been running avgas in my RC plane 2-stroke gasoline engines for years and my carb rebuilds were practically eliminated versus when running on pump gas. I've been running my weed eaters and chain saws on it for two years and not a carb rebuild yet. The gas/oil mixture stays fresh for over a year plus there is no eye/nose burning stench .

                • Vivian Eubank
                  Vivian Eubank  3 weeks back

                  If you get a chance to try Mechanic in a Bottle. It's sold at Home Depot. I have seen it do amazing things.

                • StopThemNow08
                  StopThemNow08  3 weeks back

                  AVGAS has NO detergents in it. That’s why you have more carbon build up..

                  • Marshall Warden
                    Marshall Warden  3 weeks back

                    I use this stuff in my generator & lawn mower for winter storage. Actually just started a old honda cb200 motorcycle last week that I had stored for 8yrs with 100ll in it. Fired right up & ran good as it did when it was parked. Fuel still smelled fresh....some fuel injected engines don't like it some run just fine on it. Carburetored engines typically seem to run better.

                    • bcgrittner
                      bcgrittner  3 weeks back

                      Well, here’s a can of worms. Volatility factor (Reid Vapor Pressure) is limited in avgas to a factor of 7. This mitigates vapor lock at high altitudes. Many light aircraft have gravity feed fuel systems. Auto gas can have an RVP as high as 12 during colder seasons. The lead in the avgas will cause problems with modern automotive engines. Avgas cannot be dispensed directly into your car. As an octane booster for an older high compression engine it works pretty well. The big disadvantage of avgas is its price. As of 2016 its price had a nationwide average of $5.75 per gallon.

                      • bobwatters
                        bobwatters  3 weeks back

                        Valve seats used to be made out of unhardened metal and the lead acted as a cushion between the valve and valve seat. When they removed lead from fuel they started making valve seats out of hardened steel so the lead was no longer needed. There shouldn't be any difference in performance in the short term, other than possibly messing up some catalytic converters on cars. You will also see no performance gain from higher octane fuel without advancing the spark timing.

                      • LanceTheInvader
                        LanceTheInvader  3 weeks back

                        Yes, leaded gas is better. But, norms have changed and we have the next best thing. In the long run we are all winner thought. The easy way out aint always the best.

                      • Aaron
                        Aaron  3 weeks back

                        Leaded gas "was" better years ago for many reasons. Most importantly, it helped stop friction in the valves. Now, it doesn't really matter due to how the motor is made. It may even hurt an engine.

                      • alex.mail123
                        alex.mail123  3 weeks back

                        I need more that Wankel engine!

                      • Ryan Hogan
                        Ryan Hogan  3 weeks back

                        Over time they will short the electrodes to the ground strap., in flight training for private’s lisence they teach you to know when it’s happening, and how to help resolve it in flight, by leaning the engine building some heat, some guys have told me they will make a heavy climb or decent to tip the engine to help move it, not sure if that’s a wives tail , I don’t like to dive because my engine is running rough, unless I’m 100% sure it will solve the issue, I’ve only dealt with the issue during run up thus far.., I’m sure my old 290d2 will get me one day..

                        • Paul Davidson
                          Paul Davidson  3 weeks back

                          Leaded gas is a lethal cumulative toxin ,so no.

                        • evanplanas
                          evanplanas  4 weeks back

                          "Don't use jet fuel as a skin cleanser...." someone messed up big enough to make it necessary to actually have that be written down.

                          • Awok E
                            Awok E  1 days back

                            Jet fuel is actually kerosene and it heals most cuts and scapes. 👍

                          • Aaron
                            Aaron  3 weeks back

                            Gas works great at removing grease from your hands. It is a good cleaner. Just wash the gas off of you when you are done.

                          • Project Farm
                            Project Farm   4 weeks back

                            lol. Great point!

                        • Clark Pitts
                          Clark Pitts  4 weeks back

                          Ton of work making these videos.. Great work. A++

                        • Jack T
                          Jack T  4 weeks back

                          Cars had a lot of issues with valve guides initially. However, roller valve train and compensating other ways did away with the issues in time. What killed lead for cars was the catalytic converter.
                          In aviation a couple things happened. Traditionally, airports had to inventory both 100/130 and 80/87. 100LL was approved for use in 80/87 engines enabling them to inventory only one type of gasoline. However, 100LL has much more lead the 80/87, which caused plugs to foul very quickly, which from a practical standpoint required 80/87 engined aircraft to add EGT meters to lean out the engines so the plugs wouldn't foul so quickly. Today, some airplanes and engines are approved for lead-free car gas that more an more airports are stocking, and it's cheaper. Worldwide, gasoline at airports is no longer universal. Many only have gas turbine fuel. (kerosene with a few additives).

                        • LMacNeill
                          LMacNeill  4 weeks back

                          The thing I think you missed with this test is the fact that, with the 100LL fuel, you can advance the timing a *LOT* without generating knock and get a *TON* more power from an engine. Unfortunately, it's difficult (sometimes impossible) to do this in a small engine, like the ones you used for this testing. But that's the big advantage to 100LL -- the anti-knock properties.

                          I had a '68 Ford Galaxie with a high-compression 390-cu-in V8 in it, and one time I drove to the local airport and filled it up with 100LL just to see what would happen. I didn't have a dyno to measure wheel horsepower, but the 0-60 time decreased by 1 full second when I set the timing to just below the point where it stopped knocking on 100LL vs. 93-octane unleaded. That car was designed for 99-octane leaded fuel, however -- what they called "high test" back in '68, so I definitely expected it to run far better on the 100LL.

                        • Clint Eckerman
                          Clint Eckerman  1 months back

                          Alright, benzene and lead fumes!

                          • Forward Plans
                            Forward Plans  1 months back

                            Looks like a 4x4 lawnmower, with that pulley on the front axle.

                            • Patrick Barry
                              Patrick Barry  1 months back

                              Lead makes your children stupid.

                              • Aris Torm
                                Aris Torm  1 months back

                                Aviation is not the same as a real LEADED race fuel like VP or others.

                                • StopThemNow08
                                  StopThemNow08  3 weeks back

                                  Aris Torm 😭😭🤣🤣🤣. AVGAS is better than VP purple.. R u going to cry.😭 some more.

                                • StopThemNow08
                                  StopThemNow08  3 weeks back

                                  Aris Torm 🤣The man just showed you he ran AVGAS in his go cart and the mile per hour was faster with the fuel... You had to of road the shoooooooooort 🚌

                                • StopThemNow08
                                  StopThemNow08  3 weeks back

                                  Aris Torm 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣You’re an idiot

                                • Aris Torm
                                  Aris Torm  4 weeks back

                                  @StopThemNow08 Sure you do are you at 10,000 elevation it is not the same as a real leaded race fuel like VP and others.

                                • StopThemNow08
                                  StopThemNow08  4 weeks back

                                  We run AV gas all the time at the track. And @ $5.35 a gallon we will keep on using it.. Never had any issues!

                              • John Rodrigues
                                John Rodrigues  1 months back

                                It will only make a difference performance wise with higher compression. Lead was added as an octane booster/anti-knock agent and lubricant for the exhaust valves.

                              • Jeff McCrea
                                Jeff McCrea  1 months back

                                I don't mean to be a stickler for details but just how did you lean out the air / fuel mixture on the go kart to run it on av gas? If you did it with the idle screw on the carb, you didn't lean out the mix. You would have had to change the jet inside the bowl of the carb. Some small engine carbs are changeable, some are a drilled hole and can't easily be changed.
                                Also, your fuel injected generator probably was able to adjust for it somewhat but I hope you don't live in California as some small engines there have catalytic converters. If you read some of the ads from Harbor Freight, Lowes and home Depot, some of their small engine devices and generators say in their ads "Not for sale in Calif."
                                One other thing to consider in general. ALL stock factory non-modified engines from weed whackers to tractor - trailers, for their horse power ratings, fuel efficiency, exhaust gas content /output are adjusted for the presence of the proper air filter in place when they run. This may or may not make a difference with your tests as they are mostly short term and not done over thousands of hours / miles or hundreds of gallons of fuel but it is something to think about.

                                As I am writing this, your YouTube channel has switched over to "Is 70 year old oil...". Just a short story about Quaker State oil. My father bought his first NEW car in 1974. It was a Pontiac Catalina with a 400 Cu.In. engine and 2 miles on the odometer. It had a whopping 175 horse power. He bought it in New York just before we moved to Florida upon his retirement. After we got there, I bought my first car, a 1968 Chevy Bel Aire with a 307 Cu.In. engine with 200 horsepower. (I mentioned this car in your gas / alcohol video comments.) His car, he took care of as if it were his fourth child. Whenever I tuned it up, changed the oil, (every 3,000 miles), rebuilt the brakes or any other repair, he demanded GM dealer parts and Quaker State Deluxe 30 W motor oil as commanded in the owner's manual.
                                Back to my car for a minute. My car didn't start out to be a racer. In fact, it was the Little old lady from South Pasadena's, (Florida) car, literally. Over a couple of years, the stars aligned in my favor and I acquired the quadrajet intake manifold and power pack cylinder heads from a 1966 283 Cu.In. Corvette engine and the quadrajet carb from a 454 GMC motor home. Once adjusted correctly, a deadly combination within it's own class. From the day that I bought this car, I used nothing but Valvoline 40 W racing oil and the STP "silver bullet" oil filter EVERY 3,000 miles due to the sand and heat of Florida's summers. I had plans for this diamond in the rough. My tune up parts were Accel brand. I bought it with 60,000 miles on it and planed to keep it forever. I still miss it 45 years later. I got my performance parts together after about 30,000 miles of my own doing. When I removed the top of the engine to replace the intake and heads, it was like brand new. NO sludge at all. I was a bit of a lead foot then replacing 3 power glide 2 speed transmissions in 40,000 miles and 4 years of ownership, but I digress.
                                Now back to my father's 1974 Pontiac. After 50,000 miles, he started seeing a few drops of oil here and there on the driveway. I checked it out and found that the cork rocker arm cover gaskets had shrunk and began to leak. Off I went to the Pontiac dealer for new ones. When I removed the covers from this engine that had been bottle fed Quaker State Deluxe oil for all of it's life, I was horrified!!! I had to go into the house and get a teaspoon and a wire coat hanger. The spoon to shovel out the sludge that was level with the top of the cylinder heads and the coat hanger to rod out the hollow rocker arm push rods that were starving the valve tops of oil. They were so bad that I almost had to replace several rocker arms that were wearing at their contact points. Luckily, I was able to adjust for the discrepancy's with the adjuster nuts. My father saw how clean my engine was and from that day on had me change his oil with Valvoline and the Silver Bullet filter. He sold the 2 cases of Quaker State that he kept in reserve at our next yard sale.

                              • Antonio Vasquez
                                Antonio Vasquez  1 months back

                                Can you check if an hho generator will work and if any damage comes from using one i would love to use water as a fuel source