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- 2018 CX-9 GT
I was reading an article in Scientific American on petrol companies adding nitrogen to their gasoline detergents to help mitigate carbon buildup on valves. Seems that both Shell and Exxon have added nitrogen to their detergents and I'm wondering if anyone has read-up on this to gauge whether it will make a significant differences in direct injection engines or if it's more of a marketing opportunity for these companies. Thanks.