Sounds like one of those energy drinks. And in a way, it is. It’s the new ingredient BP is touting in its gasoline to clean intake valves to keep your engine humming. Though we don’t know exactly what ...

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The other day I dropped my car off at a European specialist shop, and while I was there, a technician was working in the engine bay of a Mk7 Golf R, cleaning out carbon deposits off the intake valves.

CHEVRON WITH TECHRON! BP gasoline with Invigorate! And here's a new one: Nitrogen Enriched Gasolines from Shell! Fuel additives have some pretty hokey names, but behind them is real chemistry. It's ...

Q: I drive a 2008 Camry 6-cylinder 15,000 miles per year. Other then bragging rights, does Tier 1 gasoline provide any other benefits, such as less maintenance cost, longer engine life or increased ...