Hi, since I’m only a poor apprentice who has to drive around 25,000km a year with his petrol engine I rely on fuel saving. I don’t always know exactly what’s right. 1)What’s right. a) With 1500U full throttle in the 5th a mountain high b) With 2000U 1/2 full throttle in the 4th the mountain high 2)How to really accelerate out of the city. a)In the 3rd with almost full throttle to 60km/h, then in the 4th again strong gas and only at about 90kmh let the 5th in and slide. b)In the 5 Gan g with approx. 55kmh for a long time with half gas high-accelerate. 3) Is it right that I can roll under the mountain when I have 5speed e.g. no fuel need only approx. 1 litre the STunde. No matter if 1000 or 5000 turns. 4)In the idle one builds more than if you have the 5speed in it. Thank you if you can help me further. Have a nice evening still Cya