Firespitter CFG

[realmanhack]

Need some help, comrades!

But first, sorry for my ugly english

I making aircraft and my fuel tanks contains 6 units of  L. fuel (30 kg)

Wanna use this 6 units for 45 minutes flying at 100% thr.

I copy-pasted this module from Firespitter engine and changed a bit.

MODULE
{
    name = FSengine
    thrustTransformName = thrustTransform
    maxThrust = 0.55
    powerProduction = 40
    engineBrake = 15
    powerDrain = 10
    velocityLimit = 0,1; 20,0.95; 25,0
    fuelConsumption = 0,0.00001;1,0.002
    atmosphericThrust = 0,0;0.9,1;1,1
    resources = LiquidFuel,0.0025;IntakeAir,0.375
}

 

But now fuel wasting too fast - enough only for 3-4 minutes.

How can i fix it? What values i should use?