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Multi-System Tune-Up

Cleans
Conditions
Prevents
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All engines develop performance issues over time, whether they’re gas, diesel or ethanol. Carbon deposits reduce performance and fuel economy. Water and ethanol corrode key engine parts. Gumout® Multi-System Tune-Up is the most advanced treatment for all types of engines, from cars to lawn mowers. It cleans and conditions using premium ingredients, like P.E.A. (polyetheramine), to help maximize performance, fuel economy and engine life. Multi-System Tune-Up can be added in the gas tank, the crankcase or via induction. Learn more about the science behind Gumout.

Cleans
CLEANS
GDI/direct and port/indirect fuel injectors, carburetors, intake valves and ports, piston tops, cylinder heads, combustion chamber and crankcase
Conditions
CONDITIONS
Gasoline, ethanol blend and diesel fuels to fight ethanol and water corrosion, fuel and oil to fight deterioration/destabilization
Prevents
PREVENTS
Future carbon buildup
Best for
BEST FOR
Maximized performance and fuel economy, reduced emissions, fuel stabilization
US Item #: 510011
CAN Item #: 30002
Directions
  • Add to fuel: For optimal results, add entire can to the tank. Fill the tank with fuel and run to near empty before refueling. One pint treats 18-21 gallons of all types of gas or diesel fuels.
  • Add to oil: Add one ounce per quart of oil. Immediately start engine and run for 5-10 minutes to mix completely.
  • Vacuum Intake Cleaner: May be used with engine decarbonizing equipment through the vacuum system to clean intake manifold, valves and combustion chamber. Follow recommended mechanical procedures for the equipment.
  • Small 4-cycle engines: Add to gasoline using ¾ to 1 ounce per gallon of fuel.
  • Small 2-cycle engines: Add to gasoline using ¾ to 1 ounce per gallon of fuel. Add 2-cycle oil as recommended by engine manufacturer. Gumout® Multi-System Tune-Up does not replace 2-cycle oil.
WARNING

This product can expose you to chemicals including Naphthalene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

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Gumout
Average rating:  
 154 reviews
by Dallas Cram on Gumout
Amazing

My wife's minivan wouldn't start tried gasoline antifreeze and still no go, found this in my garage that I had bought to try in my truck, I poured the entire can in the fuel tank and it fired right up. Totally amazed!

by Deriff Nught on Gumout
Easy

I have never used this product and my car is running pretty good. Gumout Multi-System Tune-up is awesome.

by Christian M. on Gumout
Car sat for over a year.

I bought 2 bottles of this because it was BO50%OFF. Which worked out anyways because my car had been sitting for over a year with no oil changes and no startups. The last time I started it, you can telvit was sluggish from just sitting for a long time. Once I put these bottles into the gas and oil. Without hesitation, started right up and runs just like when I first bought the car.

by Steve Cedrone on Gumout
GDI Fix in a can!

This stuff fixed the problems with my GDI valve build-up. I use it in my engine lubricator to keep a constant supply slowly dripping into an engine vacuum line and it keeps my valves spotlessly clean as verified with my scope-camera. They should be putting these vacuum fed oilers on newer cars with direct injection and have you use this stuff in them so the engine is always cleaning itself. Amazing results! No big repair bills every 50,000 miles any longer!

by Rylan on Gumout
Good Stuff

I have a 94 Buick Century that was running like death. I put a can over this stuff in there and it started to roll smoke out of the exhaust for about the first 30-40 seconds of running. This stuff has really helped my car run new again!

by Rylan on Gumout
Good Stuff

I have a 94 Buick Century that was running like death. I put a can over this stuff in there and it started to roll smoke out of the exhaust for about the first 30-40 seconds of running. This stuff has really helped my car run new again!

by Paul on Gumout
Fixed Check Engine Light Error Code

The Check Engine light was coming on about 1-2 times a week with the same error code, P0400: Exhaust Gas Recirculation Flow Malfunction. I used my OBDII reader tool to view and clear it each time. Since putting 12 ounces of this product in a full tank (4 oz in the engine), the check engine light has not come back on.

by Paul on Gumout
Fixed Check Engine Light Error Code

The Check Engine light was coming on about 1-2 times a week with the same error code, P0400: Exhaust Gas Recirculation Flow Malfunction. I used my OBDII reader tool to view and clear it each time. Since putting 12 ounces of this product in a full tank (4 oz in the engine), the check engine light has not come back on.

by Douglas A McNeish on Gumout
Mr

I have used this product and i think it’s great

by Thomas Robicheaux on Gumout
Amazing results.

I used this in a friends 93 Silverado that was poorly maintained. We put it in like the instructions on the can and drove around for awhile. After it idled a while and the wind was blowing we could not see the truck due to all the smoke out the tail pipe. Could have been something else but it seemed like all the carbon broke loose and was burned out the exhaust and it started running smoother. Mpg is up about 3mpg.

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