Le forum du GPL

Concentrate on getting a minimum ratio of 1 millilitre of
Valve Saver Fluid per 1 litre of fuel. The easiest way to do
this is each time you top up your fuel tank, take note of how
many litres you have put in. Then check the Valve Saver
Fluid reservoir to see how many millilitres of fluid has been
used.
The figure should be the same, i.e. if you put in 50 litres of
fuel, you should have used 50 ml of Valve Saver Fluid. If
not using correct ratio, adjust ECU dial up (for more fluid)
or down (for less fluid) one point accordingly.