BerrymanProducts 0116 B-12 Chemtool Carburetor, Fuel System and Injector Cleaner, 15 Ounce, (Single Unit)

This cleaner is a powerhouse in a can. The High Energy Solvent Technology (H.E.S.T.) formula quickly dissolves gum, varnish, and fuel residues from carburetors, injectors, valves, and pistons. I used it in a high-mileage vehicle with a rough idle, and within 100 miles, the engine smoothed out noticeably and regained lost power. It even bumped up my fuel economy by a couple of MPG.It’s safe for catalytic converters and oxygen sensors, and the easy-pour metal can makes it simple to add to your tank. Whether you're treating a car, truck, or even small engines like lawnmowers, this stuff works fast and leaves a lasting difference. For under $5, it’s one of the best bang-for-your-buck fuel system treatments out there.

Like a mechanic in a bottle. Works amazing to restore a flow to your fuel system. My wife's car was failing to start consistently and this fixed it with one use.

Buen producto cumple con lo que promete, lo utilice y me sirvió bastante cuando tenía una Nissan note

I've never really had an issue with clogged fuel injectors but I use this product every couple months just as a safeguard and I do seem to notice a difference in engine power/smoothness after using. My one issue is with the cap assembly; after you open the cap there is a plastic pull-tab. That pull -tab always seems to tear before I can get the bottle opened. I then have to puncture the seal in order to pour it into my gas tank.

Wanna keep your carbon intakes clean, this B12 shot to your fuel system is a must have for all vehicle owners and specifically classic car owners like myself. Does a great job of keeping your carburetor running great keep those lifters moving keeps your valves unstuck. Just as a great job of giving you a car that little bit of boost into that fuel system.

Great value. Would buy again. $4 cheaper the O'Reilly's

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 mileFreeway 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!

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.