Hello, today I could give a nice neighbor with my 325iA starting aid, had bought me the cable two weeks ago. It stood: for petrol engines up to 2500 cc displacement. There are also starting aid cables for diesel. Can one also give a diesel starting aid with a petrol cable and vice versa? In my case the receiving battery had only 55Ah and the car (an Opel petrol engine) jumped immediately. My battery I believe 70 Ah, would it have been vice versa? Thank you for answers . ciao olderich