Hi Cail, I use a Sequential injection LPG System for my car. LPG System is working like that: When Coolant Temp < 47 C LPG is OFF, Petrol is ON Coolant Temp => 47 C LPG is ON, Petrol is OFF I set my Warm Engine Temprature :47 With this " Fuel in Cold " means "Fuel Consumed on Petrol" " Fuel in Warm ...