B-12 0116 Chemtool Fuel Injector Cleaner, 15 Ounce, (Single Unit)

Used to free up the piston rings on a hyundai, and it worked so good. Remove plugs, put 2or 3 oz in the cylinders, rotate crankshaft by hand an hour apart, kept doing this for an afternoon, whatever flowed into the crank after rings are free, ran in the crankcase for a couple of hundred miles and when i changed the oil, it was redish in color, it cleaned up the inside as well. Engine used to burn a quart in about 800 miles now it uses 2 pints in 6000 miles. Money well spent.

My daily "beater" is an old 98 Nissan Sentra SE. Quick intro explanation: So far an amazing car as I bought it five years ago on an auto auction for $1500. Back then the car had 188,000 miles on it. I've been driving around for five years and approaching 220,000 miles repair free ever since . I do good maintenance change oil and oil filter at the latest at 3000 miles or at least twice a year. I changed a full flush ATF fluid every 20,000 miles. The 2 L four-cylinder engine amazes me not only with the power it has (you can tell the soul of it comes from Nissan motorsports) but this is the first time have an engine with absolute it does not burn a single drop of oil! Nada. Zilch. Considering the mileage it has that is quite amazing! I once marked on the dipstick the oil level on a morning after the day of an oil change. 3000 miles later in the morning before going for no change I pulled out the dipstick and the oil was exactly on the same marking I made! I also tested compression on this four-cylinder engine and to my other surprise I am pretty much equal on all four cylinders with minute differences 2 to 3 psi! Amazing. It also is the first engine in a car that doesn't tip oil considering that the vehicle is 22 years old and has 220,000 miles on it! Amazing, amazing! The only complaint I have about this car is that I never achieved the city mileage of around 20 miles per gallon. The vehicle is officially listed as 20/27 city/Highway. Mine was always low around the lousy 14 to 15 gallons per mile Freeway going 65 does better and I get close to 22-24 miles per gallon. Not as great as specified. I spoke with a trusted mechanic about this who then mentioned clean out your intake with Berryman B12 and dump a can into the gas tank when you fill 'er up. You'll be surprised he said. I read and watched a few YouTube's about Berryman B12 and decided to give it a try. So I did that. And boy was I surprised! Following instructions I first slowly emptied a whole can into the running engine, with the other hand slightly opening and closing the throttle to avoid choking it off. I emptied gradually an entire can via a small hose by intake suction gradually before the throttle body. The first surprise came thereafter! Now suddenly my idle was about 400 RPM higher running. Instead of 900 now at 1300 RPM! So I readjusted the idle air screw so that the idle RPM was 900 again. Then I started to drive around mostly city driving and noticed that the engine was much more responsive and I could be very light on the gas to move her. Next time I gassed up I added a full can Berryman B12 in the gas tank. I drove around mostly city and some short freeway drives. I noticed the car was "feeling" and driving better and definitely much more responsive. Next time I gassed up I measured my fuel economy and what was in city driving usually around lousy 14-15 miles per gallon was now after the treatment suddenly 20 to 21 gallons per mile! I couldn't believe it! I gassed up since twice and every time results shows a significant increase in miles per gallon, city driving and/or Highway. That is amazing! I can say safely now that after having driven several hundred miles that my average city mileage is around 21-22 miles per gallon and on the highway! The car performs considerably better and stepping full on the accelerator boy does she take off like never before! Berryman B12, Truly awesome stuff that evidently really works and does the job!

Powerful Cleaner That Actually Works I put this carburetor and injector cleaner to the test on a high-mileage SUV that had been running a bit rough and sluggish. The results were clear within one tank of gas—the idle smoothed out, throttle response picked up, and the slight hesitation I had been noticing on acceleration disappeared. It feels like the engine is breathing easier. Application is simple: just pour it into the gas tank. The can size is generous at 15 ounces, enough to treat a full fill-up without needing a second bottle. I appreciate that it’s not one of those gimmicky additives that promises the world but delivers nothing. This one does its job well. One thing to keep in mind is the strong chemical smell—it’s potent, so you’ll want to avoid getting it on your hands or clothes. I also recommend making sure your fuel system doesn’t already have major mechanical issues; this is a cleaner, not a miracle mechanic. Bottom line: A reliable, effective product that gave my older vehicle a noticeable performance boost. Well worth keeping on hand if you want to maintain smoother performance and cleaner injectors.

Good for the money. Don't expect miracles at this price.

I have a 2010 Prius with now 206k miles. I bought it with 163k and it's burned oil ever since. Around 198-200k Oil consumption was getting pretty bad. 300 easy highway miles would burn half the dipstick. Easy highway miles used to burn 0 oil. It was all the city driving that would burn the oil. But yeah, I did a B12 piston soak, which is a bit of a complicated process and would be very lengthy to type out. Used about 6 cans. 1 of those in the gas tank, rest for the piston soaking. Required about 36hrs and a aircompressor with a flexible rubber hose. A borescope was a nice extra. Right after I completed that process, I put in Castrol GTX blend 20w50. I towed my boat 2-3 times and delivered packages as well. After about 4k miles, I didn't lose a drop of oil. Yes, I have a 16' crappie boat that I tow with a prius that has oversized AT tires and a lift. I recently switched to Valvoline high mileage blend 5w30. In preparation for Texas winter. I towed the boat once and only been driving to and from work. Maybe 300-500 miles on it so far. Somehow this oil has caught a lot of vapor/water oil in my catch can. I thought I installed it for nothing as over about 7k miles it only caught about 2 tablespoons of thick oil. Now all the sudden it's catching vegetable oil looking stuff? And quite a bit as well. Maybe a 1/4 cup. For those 300-500 miles. Doesn't seem like it's burning oil so far with the 5w30 but I will keep an eye on it. Either way, it's burning significantly less oil, comparatively.

I have been using this product since age 13 after buying my first car which was leaning in the area of a lemon...lol (true story) However, a guru Master of Mechanics name Mr. Grady Guinyard introduced this Chemtool B12 to me; "Son, just pour one of these in your gas take when filling it up; at least once each month". I remember going to pay my car note (it was a tote-the-note dealership); the owner face turned blushed as he asked me "Donald, what have you done to the car? Is this the same car that we sold to you?" See? When I drove it off the parking lot of that dealership, you would have thought, "I didn't know that automobiles could catch a cold"...Lol It was a Caprice Classic which appeared like a Mustang with a hatchback; yea, that car would even jerk at each gear shift, but, I was poor, did not make much money on my summer job, but needed and wanted my own car for work. Chemtool B12 changed my cars life for good. It ran quietly; even the gear shifting seemed to smooth out; and by reading the information on the can, I learned to pour a can in the oil crank amid oil change, (because it was burning oil pretty badly at first); even oil burning ceased. I was amazed. Here it is over fifty years later, I still use a little in lawn equipment (not too much) even luxury cars too. The best product to buy and should never, ever leave the shelves.

We all know about Seafoam. We've all seen the videos showing that it does work (thanks ProjectFarm and ChrisFix). We also all know that Seafoam is expensive. Then I found Berryman's and impressed by the price, ran the same tests by the above YouTubers. It did just as good as the big names like Seafoam and 1/3 the price. Redneck maintenance: Buy two cans of B-12, dump one in your nearly empty fuel tank and then fill to mix (with blue fuel if you have access). Then slowly dump half a can down the brake booster vacuum line and let it sit with the engine off for 15-20 minutes. Turn car back on and rev aggressively until white smoke clears. dump the other half of that can down your crank case and drive 10 miles and then do an oil change. Congrats, you've cleaned your jets, carbon deposits, and old oil with $9 of Berryman's and 1.5 hours of work. Enjoy your smoother running car, improved MPGs, and power output. (doesn't boost MPGs or power, just restores some of what was lost due to age/wear & tear.)

I had heard nothing but good comments from friends regarding this product and considering the low cost it was really a no brainer to give it a try. I found so many different methods people recommended using this to clean my dual carb system and was unsure which to use or which would work best so I contacted Berryman directly. They were very helpful, and the agent offered his suggested method which took a little more effort than just dumping it in the tank but really worked out perfectly to eliminate the issue I was having with clogged jets. This method requires draining the tank and the carbs, removing the plugs and starting with a 50/50 mixture of this and gas to run through the carbs than let sit for 30 min. Doing this several times than hoping on the bike and running it hard for 15 minutes. This blew out whatever was clogging up the "pipes". So far so good but for any future issues in the fuel line I am staying with this Berryman B12 product.

Hi i had a issue with oil consumption in my car n after so much research i found piston soak using B-12 is the best solution. I used this n gv me excellent results.

I can write a detailed review. But i will just summarise it. Be very careful when using it if u have a very high mileage car thats burning lots of oil use it at ur own risk. I followed the youtube method by removing the spark plugs pouring in cylinders every 6 hours. After the process was done i went on highway flooring the car to check no oil burning smell or check engine light. Unfortunately after 30km when i floored the car again from 0 by rngine head blew up maybe i shouldnt have stressed the engine soo soon could be user error. However my engine did blowup and oil flew up everywhere had to replace engine. The product is amazing but risky