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

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.

Used this to clear an O2 sensor code on my F150. Worked like magic.

Soooo much cheaper that SeaFoam, and it does the same thing. SeaFoam priced themselves out of my garage supply. I flip/repair small engines, as well as maintain the family fleet of 7 cars. I use this treatment 2 times a year. Like any fuel treatment its really hard to tell if its working on a well maintained car, but when I first started using this, I noticed a smoother idle on my Ram 5.7, and my 1999 Jeep Sahara starts easier than before. So, I would hope its working... but for the price, its worth trying over SeaFoam.

Works well cleaning up the car's fuel injectors

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.

Im a true believer in this . My Range Rover and Audi are 100% fixed from using this product . A couple years back my Audi 2.0l developed the common oil burning from piston ring issue . I removed spark plugs and put 1/4 bottle in each cylinder 4 times over a 24hr period . In the burning I crank it over without spark plugs to empty the cylinders. Then did a fresh oil change. 100% fixed . Never burnt oil again . Range Rover was experiencing long crank after sitting over ight from a leaking injector . This was also contaminating my engine oil . I put three bottles in a tank of fuel as a last ditch effort before replacing injectors . I’m only half author the tank of fuel and the injector issue is resolved completely. This stuff is incredible.

I used to only use the B12 in my old truck and the GumOut in my much newer vehicles but the GumOut is much more expensive. I took my 2000 Dodge 4x4 truck that has 220k miles in for a tune up, it's been 130k miles since my last tune up. The mechanic is a friend, he called me asked if I'd recently changed my spark plugs because they looked new to him. 130k miles on those plugs and they still look new. He said my entire fuel system was clean and it didn't need a tune up at all. My old truck runs so strong, I credit that to the Berryman B12. I use the B12 5-6x a year. Pour it in and fill up with gas, I have a 25gal tank. I change my oil with Havoline Pro DS High Mileage every 5k miles and change my air filter twice a year.

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