How to save fuel

Moving along the highway, what speed to choose?

At a low speed the engine runs at low turnover, with virtually no load and, accordingly, consumes little fuel, but will have to drive much longer, but if your engine is petrol, the overall efficiency of the engine is reduced due to reduction of the pressure in cylinders at the end of contraction.

At high speed increases the resistance of the movement, because of an increase of friction in bearings, in the transmission, tires on the road and the machine on the air, but time of driving is significantly reduced.

Where is the golden mean, which will provide the lowest fuel consumption?

It was determined that the most economical speed regime is riding at a speed of about 85 km / h.