It takes about 5 seconds for the air bubble to travel from one end of the wand to the other. A premier quality lube for turntable, tape deck and similar mechanical bearings, actuators, slides and levers. Because tape decks and record players where often made back in times where a lot of metal parts were used and quality was king, our senior technician has observed over the decades that very often if there is a mechanical problem beyond the need for a new rubber drive part such as a belt or tire, the next issue, if any, is often that the mechanism is not broken but instead binding.  When this is the case, once you have found the area the appears to be having trouble moving, the cause is usually old oil or grease that has dried over the decades.   It is recommended to remove the old grease or oil 1st and then replace it with a new product.  Where oil appears to have been originally used we recommend this product.  Where grease appears to have been used, we recommend the freemech lube below in the related products section..