K-100 Additive, Gas Treat/Stabilizer Qt.

Stuff is the best product I have found for cleaning carbs etc . Works great on small engines also .

Works as advertised. The only chemical base product that actually bonds with water in a molecular burnable ratio that goes up into steam in the firing cycle.

Used this last year to store multiple small engine items from dirt bikes, mowers, splitter and generator without draining the fuel. Everything fired up when needed months later without issue.

As a teenager, I worked for my father as a small engine mechanic. The most common problems were always related to fuel and the carburetor. Inevitably someone would leave their lawnmower with a black gas tank out in the sun all summer and their gas would turn to varnish.A salesperson showed up at my father's business pitching a revolutionary new fuel treatment. We were skeptical, but the results were enough for my father to carry the K100 line.K100 is amazing. I'm sorry if I sound like a shill. I'm as much a K100 shill as I am a Vanguard shill. I stick with what works. Sea Foam is a great product, but it's not as effective and it doesn't combat the presence of water. K100 claims to "make water burn". I doubt it... but no matter what the problem has been, K100 has made my engine run again. There's no other product like it.Recently, I decided to resurrect an old, disused 1991 Honda VFR750F motorcycle. It ran, but it fired on 3 cylinders. I dumped 6 oz. of K100 in there and all carburetor problems were gone.This morning, I put a couple ounces of K100 in my lawnmower which has had carburetor problems for the past couple years. I'd had the bowl, float, and needle out and cleaned the jets manually. I had given up. It's embarrassing to have been a small engine mechanic for YEARS and not have a running lawnmower.Next time before you think about tinkering with a carburetor, try this stuff out. I bought a spare bottle for myself and one for a friend who's a VW enthusiast. It works with gasoline and diesel and there's a specific blend for marine applications.It's fine for fuel injected engines as well, but I can't vouch for its ability to clean injectors. For that, I still recommend pulling a vacuum line and sticking it in a glass of Sea Foam, flooding it out and letting it sit. If you have carbureted engines, K100 is an excellent product to have on hand.

The price went up, delivery was late,packaging leaked. But I have been told it is very good, so let's see. Maybe it is worth it.

Have used all sorts of gasoline treatments ... but after seeing how K100 protects metal fuel tanks (motorcycles, older machines), it's all I use. Also never have issues with gasoline going stale, or water issues.

The last three times I have ordered this product in the one quart size from Amazon the bottles were leaking when I opened the package. The K-100 for Diesel lost about an ounce of product. I'm not sure if the product itself softens the seal on the top of the bottle and it begins to break down and leak or the manufacturer needs better seals on the bottle. The product also seems to soften the teeth in the cap when the leak occurs making the child-proof cap a real challenge to remove. No complaints about the product, it's just the packaging or shipping methods that need some improvement.

I had read about fuel treatments that made promises, but didn't deliver. However, K100 is the real deal. It binds with water and prevents ethanol separation. I won't buy anything else now. I gave a bottle to a friend who got a bad batch of gas in his boat, and it saved him from the expense of having the gas tank pumped clean. Highly recommended!