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Reply to "Fuel Injector Cleaner Maximum Frequency"

I also only use fuel from Top Tier retailers for the improved cleaning levels. I also occasionally use an STP fuel injector cleaner as a preventative measure.

However, I am a little skeptical about Shell's marketing of the nitrogen enriched gasoline.

An article I stumbled across from 2009 (see below) talks about how they suspended funding all alternative fuel research and another source stated this as a reason why they began a more aggressive marketing campaign for their enriched fuels. This may or may not be true, as unfortunately I cannot find the source again.

I will still purchase from them if the need arises (ie, they are nearby and I need fuel), as they are on the Top Tier list.

Scientific American article
Last edited by reltech
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