Berryman B-12 Chemtool Fuel System Cleaner, 15 oz

The product does exactly as I expect. HOWEVER, This is the 2nd week in a row where at checkout Walmart has delayed my grocery delivery from 6 to 8 am tomorrow to Wednesday! PLEASE do not continue to do this.

Very good price here with fast delivery service on same day! I love using Berryman B12 to clean all my automotive parts, very excellent quality cleaner!

Quality product priced cheaper than any of the local parts stores! As Derek Bieri from Vice Grip Garage says, just pour it into the gas tank and “let it chew on it” My wife's vehicle is direct injection, which can cause a buildup of carbon on the valves. I use this product on every other fill up on her vehicle.

For years I have been using Berryman's B12 for routine maintenance and deep cleaning. Where I currently reside it gets pretty cold for a few months out of the year, people Park there carbureted toys for several months and call me up wondering how much it's going to cost them to make it run right again and I tell them about $10. What you need to do is throw in a can of this stuff right here and fill your tank with some premium fuel and let it work its magic. This stuff will absolutely clean up any residual residue from bad quality fuel or gas that sat all winter. You can also use it for preventive maintenance like adding it to your tank before you plan on storing it to act as a fuel stabilizer or simply pour in a can a few times a year to keep your fuel system sparkly clean. Other brands like Seafoam have national recognition for their long-standing reliability but this stuff works just as well if not better at half the price.

I’ve been using B12 for 4 years now it’s always helped my cars out with improving gas mileage and overall performance. I recently bought a car with 2 check engine codes for rough idle and catalytic converter. After I put a can of this stuff in my tank and drove it 100 miles the check engine light turned off, and both codes were gone. It saved me a lot of money! I highly recommend it. I just wish they’d keep it at this price because it has been going up a lot over the last year.

Does just what the writing on the can says it will do. I have revived many small engines that had filthy fuel tanks and gummed up carburetors. Once your small engine has been cleaned, use this to maintain it! Really good product I have purchased many times.

...if only temporarily. It won't replace a trip to the mechanic, but it got a stubborn reoccurring check engine light to go away before I had to get me vehicle smogged. This stuff is great.

Berryman B-12 Chemtool is the only fuel injector cleaner that I only use in my personal vehicles. I was told my an old school mechanic many years ago how amazing this product was, since then I have never looked back. Berryman is a top notch injector cleaner, I highly recommend to everyone who is looking for an injector cleaner that actually works!!

Usually I use Techron to clean car fuel systems, but then I saw this one at a very discounted price. Did some online research, and found it is good stuff albeit a little stronger. Put it in my 2014 Chevy Sonic, no problems, did run a little smoother.

Walmart used to stock B-12, now they stock some items that are twice as expensive and not as good. Go figure. They made a profit call... 20% on B-12 at $4.99 or 20% of an $8.99 item. Home Depot does this too. They have less expensive items on their website you can get from the warehouse or pay DOUBLE or TRIPLE to get what they have in stock. I have a degree in Marketing and Economics, I understand their motives. But I don't like them.