Gumout Multi-System Tune-Up Fuel Stabilizer Cleaner

Excellent product and fast shipping i put half in the tank and half in the crank case. Will see what’s ginna happen.

انصح فيه ولكن سعره مرتفع بعض الشي

I have nothing bad to say about the product itself. Worked as advertised. I gave it a 1 star due to the price of $31.48 and this includes a supposed price drop of 11%. I later found it at the local Walmart and Canadian Tire for $13.48. Again, I wish I would have done some research first.

I’ve used Gumout Multi-System Tune Up for both my cars and small engines in my lawnmower and generator. It seems to clean the system and improve performance very quickly. I tend to use it every 7k to 10k miles in my car and with every tank in my lawnmower and generator.

I especially like the fact that it is supposed to be a fuel stabilizer as well as clean the system. This has been important to me for my lawnmower and generator. Prior to using any sort of additive in my lawnmower, I had left fuel in the tank over one winter and the next Spring it would not start very easy and would run rough. I added a significant amount of Gumout to the gas and ran it about 5 minutes, though took a while to start was still running rough. Tried it again the next day and the mower worked like new. I can only imagine that the Gumout got worked into the fuel system the day before and it cleaned out the gummed up ethanol overnight. Now I add about 1 oz of Gumout to each gallon of gas for my lawnmower. Since then, it runs perfect with no problems, even when leaving gas in the tank over Winter.

For my car, I can definitely notice improvement in performance after using about a quarter tank of treated gas. I am not sure about the level of PEA in the mixture, but it seems to be enough for a mid-size car with an 18 gallon tank. For large vehicles, maybe two can would be necessary.

The only thing I don’t like about this product is the can. I know it is modeled after the Seafoam container, but it is difficult to use when adding to a car gas tank. Other Gumout products have long neck designs that make adding to the tank easily, it would be nice if this product had that design too.

I have 2 older cars and they both run pretty well. Sometimes, they seemed to be lagging under load. I ran a can of this Gumout in both cars about a week ago. The lagging stopped and gas mileage improved by about 5MPG in both. One of the cars already has over 500 miles since adding this and seems to be running much smoother. The other one has less than 300 miles since and is doing better but is still on the tank that has the additive in it.
One is a Toyota and the other is a Pontiac. Both have over 150K and just needed a little help after plugs and coil packs were changed. The Pontiac was throwing a code that related to the injectors beforehand and that has not happened since adding this and resetting the code. The Toyota has had a phenomena where, after sitting overnight only, it starts and idles fine. Drive it about 1/4 mile to the first stop sign, stop and go to take off and it bogs down pretty bad. It only does it on the first stop. After that, it is fine no matter how many times you stop/start. Until the next morning, when it will do it again. Since adding this Gumout, the bogging down has diminished some but it still does it. So, I am installing a new fuel filter, pump, pressure regulator and, most likely, injectors. Probably will run another can of this through once I do all of that just as a small insurance policy.
Does this stuff work? Yes. It helped both cars. It isn’t a mechanic in a bottle and I can’t expect an additive to overhaul an engine. But, it did up the MPG and smooth out the idle and response in both cars. I believe this Gumout works and works well. I will continue to use it in the future.

I have a 2015 Honda CRV that was giving me fits by intermittently stalling when you stopped at a light or made a slow speed turn
Before I took it to the shop, I surmised that the problem could be some moisture in the gas tank, which would be just enough to cause it to stall at low RPMs when it is idling, so for the cost of seven or eight bucks, I decided to take a chance and put in the can of cleaner, fill the tank up with 15 gallons of gas and low and behold within about one or two trips to the store and for the last two tanks of gas, the car has not stalled, sputtered or acted stupid so I’m going to say that, even though it is anecdotal the stuff worked