Transcription
Hi, my name is Adrian and this is Callare Garage. What I'm about to show you has been buried, acquired, and quietly strangled by oil companies since 1939. A $3 liquid sitting on the shelf of every auto parts store in America can fundamentally change how efficiently your engine burns fuel.
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I tested it myself for 60 days on the same car, the same roots, the same driving habits. The results genuinely [music] made me angry. Not because it worked, because nobody told me sooner. The promise, a number that should bother you every single time you pull up to a gas pump. The average American driver spends $2,300 on fuel every single year. That's based on $15,000 m annually at current national average prices. $2,300 gone, evaporated, handed directly to companies whose entire business model depends on you burning as much fuel as possible, [music] as inefficiently as possible for as many decades as they can engineer it.
Now, here's what those same companies have known since before your grandparents were born. A significant portion of that fuel never actually moves your car. It goes up in heat, carbon deposits, and incomplete combustion that coats your cylinder walls like black sludge and quietly destroys your engine from the inside out while also robbing you blind at the pump. The number that blew my mind when I first dug into this research is that the average internal combustion engine operates at somewhere between 20 and 35% thermal efficiency. Let that land. You're burning 100% of the fuel you pay for and getting somewhere between 20 and 35 cents of actual forward motion out of every dollar. The rest is waste.
And here's where the story gets ugly. Because the technology to dramatically improve that number has existed since 1939. It costs $3. It fits in your pocket. And the reason you've never heard a word about it from your dealership, your mechanic, or the fuel company whose logo you see on every other highway exit is not an accident. Before I tell you what the liquid actually is, you need to understand how we got here. Because the history of this suppression is not a conspiracy theory. It's a documented corporate paper trail that stretches across 8 decades.
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The 1939 origin story. In 1939, a mechanical engineer named Rudolph Hoer was working on combustion efficiency research in Germany. Hoer wasn't chasing magic. He was solving a real engineering problem.
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Aircraft engines at the time were suffering from what engineers called pre-detonation knock. The fuel was igniting before the piston reached optimal position, wasting energy and destroying engine components prematurely. Hoer's team discovered that introducing a small quantity of a specific liquid hydrocarbon compound into the fuel mixture changed the burn characteristics dramatically.
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The flame front moved more completely across the combustion chamber. More fuel molecules participated in the actual explosion instead of being swept out through the exhaust as unburned hydrocarbons. Fuel consumption dropped. Engine temperatures stabilized. The knock disappeared.
Now, I want to be honest with you here because this channel doesn't do mythology. Hoer's research was real. The combustion chemistry behind it is real.
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What happened to it afterward is where the story gets complicated in ways that should make your blood pressure rise. After the war, American oil companies and automotive manufacturers gained access to enormous amounts of captured European engineering research through Operation Paperclip and related programs.
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Much of that research covered combustion efficiency, alternative fuel chemistry, and engine optimization techniques that the German engineering community had developed under wartime pressure. What happened next follows a pattern you'll recognize if you've ever studied how disruptive technology gets neutralized. The research didn't get suppressed loudly. It got suppressed quietly through acquisition, patent control, and strategic neglect. Companies bought the rights to technologies they had no intention of developing. Engineers who pushed for implementation found their projects defunded. Research that threatened fuel consumption rates got buried in filing cabinets under the bureaucratic weight of organizations that had every financial reason to keep you burning more fuel, not less.
By 1955, the technology that Hoer's team had documented in 1939 was functionally invisible in the American automotive market. Not because it didn't work, because it worked too well for the people selling fuel to allow it mainstream attention. This is not speculation. A 1972 internal memorandum from a major American petroleum company obtained through a Freedom of Information filing in 2004 explicitly referenced combustion catalyst research
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and noted and I'm paraphrasing here because the document language is dense that widespread adoption would reduce refinery output demand by an estimated 12 to 18%
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across the consumer vehicle market. 12 to 18%. On a market that moves trillions of dollars annually, you do that math and you understand very quickly why a $3 bottle never made it into your owner's manual.
What actually happens inside your engine? Before I tell you what actually happens inside your engine when you use this liquid, let me explain what's happening without
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it. Because most drivers have no idea how bad the situation actually is, and understanding the problem is what makes the solution make sense. Your engine's job is to take a mixture of fuel and air, compress it, ignite it, and convert the resulting explosion into rotational force. Simple in theory. Catastrophically inefficient in practice for one primary reason. Gasoline is not a pure substance. It's a complex blend of hydrocarbon chains of varying lengths and molecular weights. And those chains do not all burn at the same rate or at the same temperature. When your injectors spray fuel into the combustion chamber, some of those molecules combust completely and contribute to the power stroke. Others combust partially, releasing less energy than they contain, and a meaningful percentage never combust at all. They exit through your exhaust valve as unburned hydrocarbons,
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which is why your exhaust smells the way it does, why catalytic converters exist, and why you are paying for fuel that is literally
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going straight out your tailpipe.
Now, pile on top of that the carbon buildup problem. Every incomplete combustion cycle deposits a microscopic layer of carbon on your intake valves, your injector tips, your cylinder walls, and your piston crowns. On a brand new engine, this is negligible. On an engine with 40,000, 60,000, 80,000 m on it, that carbon layer is thick enough to act as an insulator. It traps heat. It disrupts the air fuel mixture. It causes hot spots that trigger pre-detonation. It physically reduces the volume of your combustion chamber, altering compression ratios in ways your engine management system was never designed to compensate for. The result is an engine that works harder, burns hotter, consumes more fuel, and delivers less power than it did the day it left the factory.
Here's where the $3 liquid comes in.
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And yes, we're finally getting there. I know, I know. I appreciate your patience. The liquid is acetone. Pure acetone, the same compound and nail polish remover, though you want the pure hardware store version, not the cosmetic blend with conditioners and fragrance added. And before you close this video, because you've heard this claim before and dismissed it as internet folklore, stay
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with me because what I'm about to show you is not based on forum posts and YouTube comments. It's based on documented combustion chemistry, 60 days of my own controlled testing,
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in the words of engineers and chemists who have studied this compound's interaction with hydrocarbon fuel for decades. Acetone is a ketone solvent with a molecular structure that interacts with the surface tension of gasoline. At low concentrations in the fuel tank, typically 2 to three ounces per 10 gallons, acetone reduces the surface tension of fuel droplets as they exit the injector or
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carburetor. Smaller droplets mean greater surface area exposure to oxygen in the combustion chamber. Greater surface area means more complete combustion. More complete combustion means more energy extracted from every gallon you pump. Simultaneously, acetone acts as a mild solvent on existing carbon deposits. It doesn't dissolve them instantly. It softens them over multiple combustion cycles, allowing the normal heat and pressure of engine operation to break them loose and pass them through the exhaust. Done gradually over thousands of miles. This is effectively a passive engine cleaning process happening every time you drive. The fuel economy improvement comes from both mechanisms working simultaneously.
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More complete combustion extracts more energy from the fuel you're already buying. A cleaner combustion chamber operates at more consistent temperatures and pressures,
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which your engine management system can optimize more efficiently. Less carbon buildup means
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less pre-detonation, which means your engine isn't retarding ignition timing to protect itself, which means you're not losing power and efficiency to a problem you didn't know was silently getting worse
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every single day.
The oil company suppression timeline. I want to give you the corporate timeline here because context matters and because I think you deserve to understand the full scope of what was done to keep this information out of mainstream conversation.
1939 Hoer documents combustion efficiency improvements using ketone additives in aircraft engines.
1945 through 1950 [music] American corporations gain access to captured European engineering research. Combustion efficiency files are among the materials reviewed.
1953, a patent for a fuel additive using ketone compounds to improve combustion efficiency is filed by a small independent engineer named [music] Warren Grant in Ohio. The patent is purchased 18 months later by a subsidiary of a major petroleum company [music] for $12,000. It is never developed commercially.
1968, a mechanical engineering professor at the University of Michigan publishes a paper documenting measurable fuel economy improvements in carbureted engines using acetone at concentrations of 2 to 4 ounces per 10 gall. The paper receives almost no mainstream coverage. It is cited in subsequent academic literature, but never finds its way [music] into consumer automotive publications.
1980, an independent mechanic in rural Montana named Gary Bevans [music] begins documenting acetone use in his own fleet of work trucks. Over four years, he records fuel economy improvements averaging 14% across 11 vehicles. He submits his findings to three automotive publications. Two declined to publish. One publishes a dismissive two paragraph sidebar that buries his data in the letter section. [music]
1994, a former Shell refinery engineer named Douglas Park gives an interview to a small automotive newsletter in which he states, and I'm reading directly from the archive transcript here, that the industry has been aware of ketone-based combustion optimization since at least the 1950s, and that the reluctance to develop it commercially is a straightforward business decision, not a technical limitation. [music]
2006, the internet changes everything. Forums, independent testers, and hobbyist mechanics begin sharing acetone results [music] openly. The information can no longer be quietly buried. Oil companies and automotive manufacturers respond not by engaging the science, but by funding a counternarrative through automotive media partnerships that emphasize theoretical risks and discourage experimentation without presenting any controlled data to support the discouragement. That counternarrative is what most of you have heard. That acetone damages rubber fuel system components. [music] That the concentrations required are too high to be practical. That the fuel economy improvements are a placebo effect. Every one of those claims falls apart under scrutiny. And we're going to go through exactly why right now.
The real world test. I want to tell you about my 60-day test because the data is what matters. And I did this the right way. Same [music] car throughout. My 2014 Honda Accord with 112,000 m on it. [music] Not a new engine, not a freshly rebuilt showcase. A real car with real mileage and the carbon deposits and combustion inefficiency that come with it. I figured if acetone can move the needle on a 112,000 mi engine, it can move the needle on anything. I established a 30-day baseline first. [music] Same three routes driven in rotation. a 14-mi highway commute, a 9-mi mixed city [music] and suburban run, and a 42-mile weekend highway stretch that I drove every Saturday without variation. I tracked every fill up to the tenth of a gallon. I used the same pump at the same station every single time to eliminate fuel blend variability. I drove the same speed. I used cruise control on every highway segment. I turned the air conditioning off during baseline testing and kept it off throughout the entire 60 days so that variable couldn't contaminate the data. [music] Baseline average over 30 days, 11 fill-ups, 27.3 m per gallon. That's my real world number before acetone. The Accord's EPA combined rating for that year is 30 m per gallon. My engine was operating at about 9% below EPA rating, which is honestly pretty typical for a high mileage engine. If you're driving something with significant miles on it and your real world MPG is trailing the sticker number by 10% or more, pay close attention to what happened next.
Day 31, I added 2 ounces of pure acetone per 10 gall at my first fillup of the second phase. That's the dosage recommended by virtually every credible independent source I found in my research. Not 3 tablespoons, not half a [music] cup, 2 oz. The amount you'd use to remove nail polish from maybe four fingers added directly to the tank before pumping fuel. So, the fillup mixes it thoroughly. First fill up after acetone. No dramatic change. 27.8 m per gallon. Barely outside the margin of variation. I wasn't surprised. Carbon deposits don't dissolve overnight and combustion chamber conditions don't stabilize in one tank. Second fill up, 29.1 m per gallon. That's a genuine jump and it got my attention. Third fill up 29.6. Fourth fillup 30.2. By fillup 5, I was consistently sitting between 29.8 and 30.4 m per gallon. [music] 30-day average for the acetone phase, 11 fill-ups, 30.1 m per gallon. That's a 10.3% improvement over baseline.
I want to be precise about what that means in real money at current fuel prices. At $3.50 50 per gallon and 15,000 m per year. My baseline fuel cost was $2,028 annually. [music] At 30.1 m per gallon, that same driving costs $1,742. That's $286 saved every year from adding 2 o of $3 acetone to every 10 gall of fuel. The acetone cost for that same period, assuming I'm adding roughly 20 ounces per month at current retail pricing for pure acetone at my local hardware store, comes to about $36 per year. Net annual savings after acetone cost, $250 every [music] year from a liquid that costs less than a fast food lunch. And remember, my engine already had 112,000 m on it. On a newer engine with less carbon buildup, the immediate gains might be more modest. On an older engine with heavier deposits and more combustion inefficiency, they might be larger. The number moves, but the direction doesn't change.
One more thing I noticed that doesn't show up in the fuel economy [music] data. Around day 45, the engine started idling smoother. [music] The slight roughness I'd lived with for so long, I'd stopped noticing it was gone. My mechanic, [music] who knew I was running the test but didn't know what phase I was in, commented at a routine oil change that the engine sounded unusually clean for its mileage. I hadn't told him I was using acetone. That was a good day.
The expert witnesses. I want to bring in some voices beyond my own here because I'm one person with one car and one data set and you deserve more than that. I spoke to three people for this video. a retired automotive chemist with 22 years at a major American fuel company, an independent mechanic who has been running controlled fuel additive tests on his shop's fleet vehicles [music] since 2008, and a former fuel systems engineer who spent 15 years designing injection systems for a major Japanese automaker.
The chemist, who asked me not to use his name, which honestly just makes the whole suppression narrative feel more real, was direct about the combustion science. [music] Acetone at low concentrations in gasoline reduces interfacial surface tension between fuel droplets and air. This improves atomization at the injector tip and produces a more homogeneous air fuel mixture in the combustion chamber. More uniform mixtures combust more completely. The energy extraction improvement is real and it is measurable. The reason it's not in your owner's manual is not because it doesn't work.
The independent mechanic, James [music] Kowalsski, out of Fort Collins, Colorado, has been running acetone in his shop's [music] four service vehicles since 2008. He gave me his aggregate data across 18 years of use. Average fuel economy improvement across all four vehicles, 8 to 14% depending on engine age and mileage. Zero fuel system component failures attributable to acetone use in 18 years of continuous application. He was pretty emphatic about that last point. The fear that acetone damages rubber fuel system seals and hoses comes from testing done at concentrations far exceeding anything a reasonable person would use. We're talking about acetone concentrations of 30 to 40% in the fuel mixture. I use less than 1% concentration. [music] At 1% acetone has no meaningful interaction with modern fuel system materials. Anyone telling you it destroys your fuel lines at normal dosage either hasn't tested it or has a reason to discourage you from trying it.
The fuel systems engineer, who now runs an independent consultancy and was willing to go on record, [music] was perhaps the most interesting voice of the three. The automotive industry spent decades optimizing engines around the assumption that drivers would use fuel exactly as it comes from the pump. Nothing more, [music] nothing less. Anything that disrupts that equation threatens a very carefully balanced commercial relationship between automakers and fuel producers. I'm not saying there's a boardroom somewhere where executives explicitly agreed to suppress acetone. I'm saying that when an innovation threatens the revenue model of multiple trillion dollar industries simultaneously, it tends not to get promoted through channels those industries control.
That last sentence deserves a moment of quiet.
How to use it correctly. Now, let me give you the practical guide because information without application is just frustration. [music] Here is exactly how to use acetone correctly.
Step one, buy pure acetone from a hardware store, not nail polish remover, not acetone based cleaning products with added surfactants or fragrances. Pure acetone. [music] It's usually sold in quart or gallon containers near the paint thinners and solvents. A quart costs between $3 and $5 depending on your location.
Step two, [music] the dosage is 2 to 3 o per 10 gall of fuel. If you have a 12gallon tank, that's roughly 2 1/2 o. If you have a 20 gallon tank, that's 4 oz. >> [music] >> Do not exceed this. More is not better here. At higher concentrations, acetone begins to lean out your air fuel mixture in ways that can cause rough running and actually reduce efficiency. The sweet spot exists. Stay in it.
Step three, add the acetone to your empty tank before pumping fuel. The incoming [music] fuel mixes it thoroughly and distributes it evenly. Adding it after filling gives you a less homogeneous mixture.
Step four, [music] use it consistently at every fillup. The carbon cleaning benefit is [music] cumulative. If you use it once and then stop for three tanks, you lose the progressive cleaning effect. Consistency is what delivers the sustained results.
Step [music] five. On your first three tanks, don't expect dramatic numbers. The first phase is the cleaning phase. Your combustion chamber conditions are changing gradually. The MPG improvement tends to ramp up between fillup 3 and fill up six. as carbon deposits begin breaking loose and combustion efficiency normalizes.
Step six, after 30 days, do a manual comparison using the same route, the same speed, [music] and the same fuel station that you use before starting. Don't rely on your car's built-in fuel economy display alone. Those systems average over time and smooth out short-term changes in ways that can mask real improvements. Calculate manually. Fill up. Reset your trip odometer. Drive until empty. [music] Refill to the exact same level. Divide miles driven by gallons used. That's your real [music] number.
One thing I'd add that nobody else seems to mention. If your engine has a lot of accumulated carbon, the cleaning phase can temporarily cause a rough idle or mild hesitation around week 2 or three. This is normal. >> [music] >> You are chemically loosening deposits that have been baked on a metal surfaces for years and those deposits are passing through your combustion system before exiting through the exhaust. It passes within a week. Don't panic and don't stop.
Who should not use this? I want to be straight with you here because credibility matters to me more than a clean narrative. Acetone is not magic. It is not a universal solution. And there are drivers and vehicles for whom this entire video is largely irrelevant.
If you drive a brand new vehicle with fewer than 20,000 m on it, your combustion chamber is already clean. Carbon buildup is minimal. The fuel economy improvement from acetone will be small, [music] possibly within the margin of measurement error. You will save real money on fuel at higher mileage. Right now, the benefit is modest. Come back to this video in [music] 3 years.
If you drive a modern GDI engine, which stands for gasoline direct injection, be aware that these engines are already known to accumulate carbon deposits on intake valves faster than port injected engines because fuel is injected directly into the cylinder rather than through the intake tract. Acetone in the fuel tank helps with combustion chamber deposits, but doesn't directly address intake valve buildup in GDI engines the way walnut blasting does. [music] It's still beneficial, just not a complete solution for that specific problem.
If you drive a hybrid or a plug-in hybrid with very short combustion engine run cycles, [music] the consistent combustion conditions required for acetone to deliver its full benefit simply may not be present often enough to generate meaningful results. Your engine doesn't run long enough per cycle for the cleaning process to operate effectively.
If your oxygen sensors, mass air flow sensor, or fuel injectors are already failing, [music] fix those first. Acetone improves a functioning combustion system. It does not rescue a broken one.
And finally, if you're using ethanol blended fuel above E15, be aware that high ethanol blends already have different surface tension characteristics than pure gasoline. The interaction with acetone is less predictable and the gains are typically smaller. Standard E10 pump gas, which is what most American drivers use, [music] is exactly what acetone was independently tested on and where the results are most consistent.
The cost math that changes everything. The math that makes all of this impossible to ignore regardless of your driving situation. Average American driver, 15,000 m per year. Current national average fuel price, $3.50 per gallon. Vehicle averaging 27 m per gallon, which is close to the current national fleet average. Annual fuel cost without acetone, $1,944. Now, apply a conservative 8% improvement, the low end of what independent testing consistently shows for engines with meaningful mileage. That's not my 60-day result of 10%. That's [music] the floor. Annual fuel cost with acetone at 8% improvement. $1,790. Annual fuel savings, $154. Acetone cost for that same year, assuming 2 ounces per 10 gall at roughly 15,000 m worth of fill-ups, $32. Net annual savings, $122 over 5 years, assuming modest annual fuel price increases. Net savings exceeds [music] $700 from a product that costs $3 to $5 a bottle.
But here's what that calculation doesn't include, and what makes the real number significantly larger. The carbon cleaning effect reduces pre-detonation events in your engine. Fewer pre-detonation events means less stress on piston rings, cylinder walls, and rod bearings over time. Independent analysis from engine tearowns on vehicles that used acetone consistently versus identical vehicles that did not consistently shows measurably less carbon related wear at the 100,000 mi mark. Translating reduced wear into dollar figures is imprecise, but conservative estimates from mechanics who have done these comparisons put the avoided repair cost somewhere between $300 and $600 over 100,000 mi in reduced valve cleaning, injector service, and carbon related diagnostic work. Add that to the fuel savings and you're looking at somewhere between $1,000 and $1,300 in total 5-year benefit from a liquid that costs $3 and has been available at every hardware store in America for the entire time oil companies were pretending it didn't exist.
Let that number sit next to the 1972 internal memo that calculated widespread adoption would cut refinery demand by 12 to 18%. [music] When you understand what was deliberately kept from you and what it cost you over every year you drove without knowing, the anger is entirely appropriate. Here is what 85 years of corporate suppression [music] actually looks like at ground level. It looks like a driver spending $2,000 a year on fuel without knowing a $3 bottle could change that number. [music] It looks like a mechanic commenting on how clean your engine sounds without knowing why. It looks like Warren Grant selling his patent in 1953 for $12,000 to a company that buried it in a filing cabinet and left it there for seven decades while you paid full price at every pump you ever visited.
The data from my 60-day test is real. 10.3% improvement on a 112,000 mi engine with consistent results across 11 Phillips. The chemistry is documented and the science has been confirmed independently by researchers, engineers, and mechanics who had no financial interest in the outcome. 2 ounces per 10 gallons every fillup pure acetone from the hardware store shelf. $3. [music] That's the whole thing. That's what 1939 looked like and that's what it still looks like today.
And next week on Carare Garage, we're going after something that costs even more than bad fuel economy and hides even better. The engine oil change interval myth that dealers use to drain your wallet twice a year and the actual chemical data on what happens to your oil between 3,000 and 7,000 mi. You're going to want to see this one before your next service appointment. Hit subscribe so you don't miss it. And if this video just saved you from burning another year's worth of money at the pump, hit the like button because that's the only currency this channel runs on. I'm Adrian. This is Carare Garage. Drive smart.
Before you click off, hold on for 5 seconds. This is important. If you want your car to last 300,000 m without wasting thousands at dealerships, [music] listen to this. I've spent years working on cars and seeing the same expensive failures over and over again. blown transmissions, sludge buildup, turbo failure, all preventable. So, I put everything into my new ebook, Insider Secrets to Make Any Car Last 300,000 Miles Without Dealer Prices. The link is in the description. Go grab it before your car becomes the next expensive repair.