With low-viscosity oils without propellant gas dissolved residues or other volatile components (eg solvents) the lubricators work exactly as it should. The oil is filled in a storage chamber and can be metered by applying pressure to the pen of a small valve at the lower end of a tube trickled and placed in hard to reach places. A cap (similar to a fountain pen) holds possibly unintentionally in sealed oiler leaking oil (see below) in the cap. As far as you can without the instructions (it is in fact not doing) to find out. The experiences of other Rezensoren however, show that there is more to consider, which is why a guide would be useful. Oils with high viscosity (viscous oils) are not or only sparingly and after numerous movements of the opening mechanism (which is not a pump) emerge. This lubricator is intended for rather low viscosity oils. It is not possible, oils of different viscosity without metering by one and the same tube to meter alike. Oils with volatile components also have their pitfalls: If the filling hole closed prematurely after filling with oil from a spray can, builds up in the reservoir pressure. This pressure opens the conical valve at the lower end of the tube and the oil escapes. The same thing happens when the oil (even if it did not come from a spray can) in the reservoir heated and outgassing volatiles. This is m. E. due to design and inevitably not a quality defect. If the valve close to such an extent that the pressure in the tank remains so when pressing the push button a large amount of oil would be pressed on the gas pressure from the tube, which is also not desirable (otherwise one would have indeed equal to oils with a spray can). To avoid unwanted spill proposal: let oils with volatile components before filling gassing in an open container in a warm place. The filled oiler before using it with the tip upwards holding blank (best in a cloth) and escape by pressing the pen pressure. So much care must unfortunately be so may be precisely lubricated. Is it willing to take this into account, the oiler does exactly what it should: place low viscosity oils with pinpoint accuracy.
