Gumout 510014W Regane Complete Fuel System Cleaner, 6 oz

This stuff seems to be pretty good. After running in multiple tanks back to back my gas mileage has come up about 4mpg. It seems to make a difference!

I used to buy Redline, but found out this has the same necessary additives necessary that actually make a difference, so I switched to Gumnout Regane Complete Fuel System Cleaner. I apply once every 5k oil change for my direct injection turbo engine to help keep it clean.

These used to be way cheaper. It is a must 2 times a year to keep your car running smoothly. I have a 13 year old car I have only done oil changes and this product and fuel injector cleaner (also twice a year), and no repairs. I find better pick up and fuel economy after use. It was best secret a dealership mechanic shared with me after showing interest in maintenance of more than one vehicle. Worth it and no work on your part. You will see a difference.

First time using Walmart online shopping. Price was great and free shipping. Shipped promptly from stock. Product is well recommended so no issues there.

worked great for helping a mower with over one year-old gas eventually start and clear out the hesitation. i only used a little every time i filled the tank since it is smaller than a car tank. it still took a few attempts to start and it stalled once or twice when i went to drop the mower deck but after a few cycles through this and premium gas helped save me when i was working through its other issues after sitting so long.

Great product at a great price. I use it at every 5k miles keep car running great. home delivery is very convenient.

Good product, works well because it contains PEA (polyetheramine) , which is a proven decarbonizing agent.

I used 2 bottles, 1 at each fillup, for 1st time cleaning. I plan on using 1 every 5,000 miles when I do oil changes to keep the injectors clean and remove more carbon buildup.

Product is great, definite improvement in power delivery and mileage noticed after use. Shipping was the issue, one cap cover came lose during shipping and a bottle leaked 2oz out, the entire shipping packaging was soaked through in gasoline smelling liquid, somehow went unnoticed and was still delivered. Used the full bottle, but still have the second bottle we ordered that's a quarter less full from the leak. Definitely need to be checking that stuff or change shipping policies for liquids like that, and not be leaving an obviously leaked package.

Does what it says, but cost too much. Bottles leak