To keep the needle steady the instrument is filled with a glycerine damping fluid, the air bubble is to allow heat expansion. Practical innovation for GS + Dakar: with the integrated dipstick, the oil level can be measured considerably more easily and safely. Simply replaces the original. Complete with seal.
The practical gauge for the current oil temperature. RR oil temperature gauges are completely protected against vibration by their Teflon bearings and will outlive many a motorcycle. You will really appreciate this instrument once you have tried it: values can be read quickly and without any installation stress, which can lead to a healthier warm-up phase or even to avoiding engine damage. It is important to note here that the temperature of the cooling water is strikingly different from that of the engine oil - it’s good to know both! From the “Tourenfahrer” magazine test results: “very good” accuracy, “worth every penny”.