Hi I have done 16000 Kms since installing the JTG Liquid injection, without any problems Gee that is not bad in about 4 months ,the car always starts on petrol , and after about 30 to 40 seconds it primes the petrol from the injectors replaceing the peterol with Liquid Gas, there is a pump in the gas tank , it pumps the liguid gas up to the injectors and as the petrol is primed out the liquid gas takes over seamlessly from peterol on that injector and so on till all the injectors have liquid gas , I am saving about $1000 every 10000 ks. depending on the price of gas, the valves are already hardened for unleaded and the other fuel cant think at the moment the one from sugar cane VEs are set up for that , it is on the inside of you petrol flap.