- Fuel detergents 1, 2 and 3 – provide outstanding cleanliness in port fuel injection engines, and now in gasoline direct injection engines. Cleaner engine parts can lead to better gas mileage, engine protection and engine performance. Our detergent keeps your engine 3X cleaner for better gas mileage.‡ (Benefit available only in Synergy Supreme+™ premium gasoline)
On Philips website,all Thier fuels are 3.5 times. Shells v power nitro is 5 times...