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

I love this stuff. I’ve used it multiple times for general carbon clean up, fuel injector clean up, I’ve even used 1oz per l of oil into the oil and driven the car for a few miles to clear stuff up. Works well at flushing sludge out from valves and general cleaning. For the price, definitely worth it.

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!

The B-12 0116 Chemtool Fuel Injector Cleaner is an excellent product for maintaining my vehicle's performance. It effectively cleans the fuel injectors, improving engine efficiency and smoothness. Easy to use and delivers noticeable results quickly. Highly recommend for anyone looking to keep their engine in top shape.

Good product and good price

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.

I was amazed how much better my truck runs after putting a bottle in the gas tank. I'll be using it every few months now. It's well with the price and seems to work much better then others I've tried

Worked great for getting the yard equipment ready for spring. Also great for disassembling the rebuilding yard equipment carburetors!

Most effective fuel system and valve cleaner for the cost; you may need to double the dose though