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NNEXUS ENGINEERING the impact of changing additives on the material compatibility . In GA9058, ethylhexanol is added and polyether amine is Increased from 1 .5% to 10-20% . Wetted components from the material manufacturers include the use of brass , PTFE , Nylon , 304, 305, 430F , 302 stainless steel , NBR (Buna-N ) , and Viton . Non -wetted components , not in direct contact with the fluid , were excluded from the evaluation . Published material compatibility was used to consider the interaction of ethylhexanol and amine-based chemicals with the manufacturer materials listed as available . Polyether amine is currently not documented in compatibility charts , However, in our engineering judgement , polyether amine is an amine based chemical and was evaluated for material compatibility as such . Additionally, it is a component in the current additive without documented compatibility Issues , and the overall amount of the chemical once added to gasoline is small , All of the non-metallic materials above are documented as compatible with ethylhexanol . Of the non-metallic materials , NBR (Buna-N ) is the least compatible with GA9058 as it was found to have the least amount of chemical resistance to amine-based chemicals. Lubrizol completed a soak test of Viton ( FKMA ) and Buna= N (Nitrile HNMII ) with 98880 GA9058 , and gasoline . Volume change, tensile strength , hardness, and elongation were assessed . Results from the test show that a Viton seal soaked in the GA9058 additive resulted in the same or improved performance for volume change , tensile strength , and hardness when compared to the 9888 soak test results . There was an increase in percent of elongation , however, GA9058 has a comparable Impact on elongation to that of gasoline , Buna-N seals soaked in the GA9058 additive had the same or increased performance in tensile strength , hardness , and percent of elongation . There was an increase in volume change compared to the existing 9888 additive and gasoline . Analyzing the data further shows that the increase in volume change is statistically insignificant compared to the volume change of the gasoline sample . Published literature states that 304 stainless steel is compatible with ethylhexanol and amine-based chemicals; however, there is no data for 302 , 305 , 316 (with ethylhexanol ) , or 340F stainless steels , and brass . Per sound engineering judgment , it can be stated that the other 300 series metals are similarly suitable for ethylhexanol and amine-based chemicals . Lubrizol completed metal soak testing on brass and bronze metal samples for 9888 , GA9058 , and gasoline. The soak test showed no significant difference in appearance between the three liquids tested for bronze or brass , A slight decrease in weight of the metal sample was identified with 100% of the GA9058 additive compared to 100% of 9888 additive . Considering the change in weight and time of exposure , the increase in Amy M . Lee UJa CH 6235 480 W . Mussel Dr . Suite # 250 Maumee . OH 43537 03� Noxa ..^, Biisino.^,s ConGKicrW*