How do you drive the engine correctly? I’m not talking about saving fuel or speeding, but about the optimal driving method. How should you handle speed with a warm and cold engine? Here’s a performance diagram: www.gmpartsworld.com/images/big/14itwin.gif I noticed the following with the Astra-F and Golf IV! I quote myself: Quotation: I drove an Astra-F with automatic and x16szr (1.6 8V) today and was really surprised by the switching behavior. he had accelerated the road he turned the engine up to 4000u/min each time (the engine was cold). The accelerator pedal was slightly pushed through over half. With warm engine the speed was increased at 3200-3500u/min. Once the target speed was reached the highest possible gear was inserted to glide. When passing through the village at 50km/h, 1500u/min was reached.