Hello, on 28.2. I had opened the topic, which car gas system for Opel Omega B Caravan with engine Z22XE, in the Omegaforum. The answers were different, as well as in the 4 page post of 2010. Because I was unsure and to be sure I wrote on 8.3. an e-mail to Opel Rüsselsheim. Since the gentlemen apparently sleep and no answer came, I called on 21.3. and got an employee from the tech. customer service to the apartment,with the following Komentar : I have your e-mail before I said these were not my questions,I wanted to know whether the valves were hardened and how it is with the piston rings etc.. Short silence and then,No Opel engine is suitable for the after-day installation of a car gas system,with the trimming of the engines,which are delivered on the factory side with the car gas system in the vehicle, Now again to Comentaren from de Beitägen: That I drive with full throttle, (as one wrote,600Km on the BAB, which I don’t think is possible anyway)longer distances is nonsense, then with petrol and not with gas. On the other hand Bommel drives with a 1.6t trailer without problems. So plant installations or not, that’s the question here. Greetings