Gumout510011 Multi-System Tune-Up, 16 oz.

This stuff works great! I’m a mechanic with over 35 years experience and this is my favorite go to for small engines.I recently restored a 1994 Kawasaki Vulcan 750 after it sat for 16 years.Cleaned the carburetors in the ultrasonic cleaner and rebuilt them.The bike was re-jetted for a Aftermarket exhaust and air filters.After getting the bike to run it still had a fuel delivery issue the the front cylinder carburetor and tried various other products hoping I wouldn’t have to remove the carburetors again because it’s not a fun job,nothing seemed to help much as the engine wouldn’t rev out completely.I added a few oz of this product to the fuel tank and the bike let it warm up then held the throttle wide open and it started to rev out and eventually it cleared up and now revs out completely.There must have still need a blockage of some sort in the main Jet circuit of the carburetor and the gumout cleared it out.

Solved my oil consumption problem on my 2.4L ecotec. This product in the spark plug holes for a few hours and the new vented cap from AC Delco (FC219) solved my oil consumption problem.

Great stuff for a fuel system cleaner, I run this in my Vehicles 3 times a year to keep from carbon build up.

Great product but both cans have multiple dents - delivered by USPS and left by garage instead of front door.

I watched a youtube video that suggested this product so thought I'd give it a try. My vehicle was purchased new and just hit 15k miles after about 2 years of Colorado driving. Noticed it was running kind of rough and there was a lag when accelerating. I assumed it was time for a scheduled maintenance but none is listed. So, tried this product and I'm truly amazed at the difference. I combined the treatment with a full tank of premium fuel - about 16 gallons - and didn't notice immediate results. But, after driving around for a few days including a highway round trip of about 150 miles, it's ridiculous how much better my vehicle runs. Smoother, quicker acceleration, and I think gas mileage has improved but I won't know until I fill the tank again in a few days. No brainer that I will make this product part of my maintenance every 5k miles

Does what it's intended for and great price also.Not recommended for Diesel engines or engines with glow plugs.Fast shipping - Thank You!Not intended to seat/inflate new car tires.

...and this little concoction gave me a few more months with old Bessie. She was pushing 200K and my mom didn't take good care of her while she was alive (my mom not Bessie the car). She sputtered. She misfired on third gear. This stuff cleaned a lot of the gunk out and Bessie kept going for another eight months before it was finally time to put her out to pasture and get a newer car. Decent product.

I have sold and used GUMOUT products for over 60 years. None better.