Do I have to install both in-tank and in-line systems?

You’ll get the best effect from Broquet when both types are combined; called a ‘PRO’ system. The in-tank unit works to ‘pre-treat’ the fuel in the tank. When it passes through the in-line unit, there will be a synergistic effect that gives the best ‘fuel boost’. The added benefit is that fuel is kept fresh even if the car is left in the garage for weeks.

This system is highly recommended for the motor enthusiast owner.