Help & Support Center

Gumout Multi-System Tune-Up is recommended for use in all types of engines. But other Gumout fuel additives can also be used in these engines. The treat rat...

Gumout offers two products recommended for use in diesel engines: Diesel Fuel Treatment and Multi-System Tune-Up (formulated for use in gas, ethanol and die...

While most Gumout fuel additives are not recommended for vehicles designed to use E-85 fuel, Gumout Multi-System is recommended for use in flexible fuel veh...

No.

Gumout fuel additives are not recommended for use as a parts-cleaning solution. However, Gumout offers a line of maintenance aerosol products for cleaning s...

Yes, Gumout Multi-System Tune-Up is formulated for use in all types of engine, including including gas, ethanol and diesel. Gumout additives do not replace ...

Yes. One bottle can be used in any gasoline tank up to 35 gallons.

Yes. Carburetor deposits are typically easier to clean than fuel injector deposits, and the chemistry used in the fuel injector cleaner will also effectivel...

10 octane points = 1 octane level at the gas pump. Gumout Octane Booster increases the octane of fuel by 8 points or by 0.8 levels. Although this may vary d...