Does Top Tier Fuel Actually Clean Your Engine? AAA Thinks It Has The Answer

Top Tier gas is formulated to keep your engine cleaner and costs just a little more. But is it worth looking for? AAA ...
Hot Rod

HOT ROD Top Pick: Berryman Intake Valve & Combustion Chamber Cleaner and B-12 Chemtool Total Fuel System Clean-Up

Gasoline direct injection (GDI) engines have become increasingly popular for their improved fuel efficiency, reduced emissions, and enhanced performance. The latest generations of GDI V-8s become more ...
Cars

What Is Top Tier Gasoline, and Why Should I Use It?

Top Tier gasoline contains more effective detergents than federally required, which helps clean fuel injectors and reduce harmful carbon deposits inside the engine. Clogged fuel injectors and carbon ...
Road & Track

Beware Direct-Injection Engine Cleaning if You Have Nut Allergies

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.