In science, results reign supreme. Formulas need to work consistently and in a variety of conditions to be considered successful. Gumout uses ASTM Industry Standard tests to ensure our formulas are scientifically effective, time after time, under the toughest conditions.
Gumout follows detailed testing standards from ASTM, an international standards organization that develops and publishes testing standards for a wide range of industries, including major auto companies and the nation’s leading fuel, oil and chemical companies.MORE ABOUT ASTM TESTING STANDARDS
In a world full of marketing slogans and hyperbole, ASTM standards are trusted for fostering innovation, industry competition and consumer confidence. ASTM’s consensus standards mean that companies ranging from Fortune 500 behemoths to emerging start-ups are subject to the same scientific testing criteria.
This test measures CCDs (combustion chamber deposits) and the LAC (lowest additive concentrate) to control IVDs (intake valve deposits) for LAC registration.MORE ABOUT LAC DETERGENCY TEST
Technicians operated a 1985 BMW 318i, that is specified in the test, on a test track under controlled cyclic conditions for 10,000 miles (16,000 km), simulating a mix of city, suburban and highway driving.
The 1985 BMW 318i is powered by a 1.8L, 4-cylinder, port-fuel-injected, single-cam engine. Per ASTM specifications, the vehicle was also equipped with an automatic transmission and air conditioning.
The ASTM standard is adapted so that the initial 10,000 miles running on additive-free fuel must cause average deposits of greater than 290mg per intake valve. After addition of Gumout and running for one tank of fuel, fewer than 100mg of deposits remained on valves, signaling a successful passing score.
The US Environmental Protection Agency (EPA) and California Air Resources Board (CARB) require this test for additized gasoline to prove their qualifications for preventing deposits from building on fuel injectors.MORE ABOUT INJECTOR FOULING TEST
The Injector Fouling Test recreates periods of engine activity and inactivity to create deposit build-up on fuel injectors. Testers alternate between running the engine at 55mph for fifteen minutes, then cooling the engine in a hot soak for 45 minutes. This cycle is done repeatedly until 2,000-3,500 miles are reached, at which time the additive is introduced to the fuel. The active-inactive driving cycle is then repeated for an additional 300 miles (approximately one tank of fuel) to examine additive effectiveness.
Per the specifications of the Coordinating Research Council (CRC) and CARB, this test uses a Chrysler vehicle from 1985-1987 with a specified 2.2L engine. The vehicles must include the following properties: 4-cylinder, turbocharged engine and PFI.
The untreated fuel typically blocks injector flow so that it is notably less than 95%. For successful qualification, an additive must improve fuel injector flow to at least 95% in the final 300-mile test period. Gumout Fuel Injector Cleaners, Complete Fuel System Cleaners and Multi-System Tune Up products passed this test.
This test is used to measure a fuel’s ability to control IVD (intake valve deposits) for Top Tier™ certification. It is also used for measuring CCD (combustion chamber deposits).MORE ABOUT TOP TIER DETERGENCY TEST
The engine is operated for 100 hours using a two-phase cycling, laboratory dynamometer procedure. The average intake valve tulip deposit weight (mg/valve) is then measured at the end of the test.
The 1994 test engine must be an in-line, 4-cylinder, four-stroke, gasoline engine with a 2.3L displacement. The engine has EGR and electronic PFI, with one spark plug and two valves per cylinder.
Per Top Tier™ Test Standards, base fuel must cause at least 500 mg/valve of IVD during 100 testing hours. Once additive is introduced to fuel, IVD must be reduced to less than 50 mg/valve. Additionally, CCD of additized fuel must not exceed 140% of CCD caused by base fuel. Gumout additives successfully exceeded both the IVD and CCD testing requirements.
Our stringent standards require analysis throughout the entire fuel additive testing process for optimal comparison of affected parts.MORE ABOUT A THOROUGH TESTING PROCESS
We put all Gumout products through the rigors of ASTM testing, using objective measurements from tools like the permascope, which compares carbon deposit depth on piston tops before and after treatment.
Testing is performed to ensure fuel additives do not harm engine components or vehicle operation in any way.MORE ABOUT TESTED TO DO NO HARM
Ensures that fuel additive does not cause an increase of sludge in the engine oil.
Ensures that fuel additive does not cause valve sticking in cold temperatures.
Ensures that fuel additive does not increase the exhaust temperature causing degradation to the catalyst system.
Ensures that fuel additive does not build deposits or damage the oxygen sensors.